soc: Add Kconfig for each soc vendor

Allows explicit ordering for vendors that share a common configuration
that must be sourced last.

The issue is that chips in soc/{amd,intel}/[ab].* will be able to
override defaults set in this file, but Kconfig files that get sourced
later (soc/amd/[d-z].*) will NOT be able to override these defaults.

Note: intel and amd soc chips now need to be added manually to the new
Kconfig file

BUG=b:62235314
TEST=make lint-stable

Change-Id: Ida82ef184712e092aec1381a47aa1b54b74ed6b6
Signed-off-by: Chris Ching <chingcodes@google.com>
Reviewed-on: https://review.coreboot.org/22123
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/Kconfig b/src/Kconfig
index e3323ba..f853c66 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -333,7 +333,7 @@
 menu "Chipset"
 
 comment "SoC"
-source "src/soc/*/*/Kconfig"
+source "src/soc/*/Kconfig"
 comment "CPU"
 source "src/cpu/Kconfig"
 comment "Northbridge"
diff --git a/src/soc/amd/Kconfig b/src/soc/amd/Kconfig
new file mode 100644
index 0000000..0c33b54
--- /dev/null
+++ b/src/soc/amd/Kconfig
@@ -0,0 +1,5 @@
+# Load all chipsets before common
+source "src/soc/amd/stoneyridge/Kconfig"
+
+# Load common defaults last
+source "src/soc/amd/common/Kconfig"
diff --git a/src/soc/broadcom/Kconfig b/src/soc/broadcom/Kconfig
new file mode 100644
index 0000000..18c46c1
--- /dev/null
+++ b/src/soc/broadcom/Kconfig
@@ -0,0 +1,2 @@
+# Load all chipsets
+source "src/soc/broadcom/*/Kconfig"
diff --git a/src/soc/dmp/Kconfig b/src/soc/dmp/Kconfig
new file mode 100644
index 0000000..46e5c6d
--- /dev/null
+++ b/src/soc/dmp/Kconfig
@@ -0,0 +1,2 @@
+# Load all chipsets
+source "src/soc/dmp/*/Kconfig"
diff --git a/src/soc/imgtec/Kconfig b/src/soc/imgtec/Kconfig
new file mode 100644
index 0000000..18c6ba1
--- /dev/null
+++ b/src/soc/imgtec/Kconfig
@@ -0,0 +1,2 @@
+# Load all chipsets
+source "src/soc/imgtec/*/Kconfig"
diff --git a/src/soc/intel/Kconfig b/src/soc/intel/Kconfig
new file mode 100644
index 0000000..72ad3e0
--- /dev/null
+++ b/src/soc/intel/Kconfig
@@ -0,0 +1,15 @@
+# Load all chipsets
+source "src/soc/intel/apollolake/Kconfig"
+source "src/soc/intel/baytrail/Kconfig"
+source "src/soc/intel/braswell/Kconfig"
+source "src/soc/intel/broadwell/Kconfig"
+source "src/soc/intel/cannonlake/Kconfig"
+source "src/soc/intel/denverton_ns/Kconfig"
+source "src/soc/intel/fsp_baytrail/Kconfig"
+source "src/soc/intel/fsp_broadwell_de/Kconfig"
+source "src/soc/intel/quark/Kconfig"
+source "src/soc/intel/sch/Kconfig"
+source "src/soc/intel/skylake/Kconfig"
+
+# Load common config
+source "src/soc/intel/common/Kconfig"
diff --git a/src/soc/lowrisc/Kconfig b/src/soc/lowrisc/Kconfig
new file mode 100644
index 0000000..a514135
--- /dev/null
+++ b/src/soc/lowrisc/Kconfig
@@ -0,0 +1,2 @@
+# Load all chipsets
+source "src/soc/lowrisc/*/Kconfig"
diff --git a/src/soc/marvell/Kconfig b/src/soc/marvell/Kconfig
new file mode 100644
index 0000000..e9f5478
--- /dev/null
+++ b/src/soc/marvell/Kconfig
@@ -0,0 +1,2 @@
+# Load all chipsets
+source "src/soc/marvell/*/Kconfig"
diff --git a/src/soc/mediatek/Kconfig b/src/soc/mediatek/Kconfig
new file mode 100644
index 0000000..d0d19c9
--- /dev/null
+++ b/src/soc/mediatek/Kconfig
@@ -0,0 +1,2 @@
+# Load all chipsets
+source "src/soc/mediatek/*/Kconfig"
diff --git a/src/soc/nvidia/Kconfig b/src/soc/nvidia/Kconfig
new file mode 100644
index 0000000..99436bf
--- /dev/null
+++ b/src/soc/nvidia/Kconfig
@@ -0,0 +1,2 @@
+# Load all chipsets
+source "src/soc/nvidia/*/Kconfig"
diff --git a/src/soc/qualcomm/Kconfig b/src/soc/qualcomm/Kconfig
new file mode 100644
index 0000000..44063ad
--- /dev/null
+++ b/src/soc/qualcomm/Kconfig
@@ -0,0 +1,2 @@
+# Load all chipsets
+source "src/soc/qualcomm/*/Kconfig"
diff --git a/src/soc/rockchip/Kconfig b/src/soc/rockchip/Kconfig
new file mode 100644
index 0000000..c2e91a7
--- /dev/null
+++ b/src/soc/rockchip/Kconfig
@@ -0,0 +1,2 @@
+# Load all chipsets
+source "src/soc/rockchip/*/Kconfig"
diff --git a/src/soc/samsung/Kconfig b/src/soc/samsung/Kconfig
new file mode 100644
index 0000000..ae803b4
--- /dev/null
+++ b/src/soc/samsung/Kconfig
@@ -0,0 +1,2 @@
+# Load all chipsets
+source "src/soc/samsung/*/Kconfig"
diff --git a/src/soc/ucb/Kconfig b/src/soc/ucb/Kconfig
new file mode 100644
index 0000000..e5221df
--- /dev/null
+++ b/src/soc/ucb/Kconfig
@@ -0,0 +1,2 @@
+# Load all chipsets
+source "src/soc/ucb/*/Kconfig"