soc/intel/tgl: move DIMM_SPD_SIZE from mb to SoC Kconfig

All TGL mainboards are setting DIMM_SPD_SIZE to 512. Thus, default to
512 in the SoC Kconfig and drop it from the mainboard Kconfigs.

Change-Id: I9fd947b61c984e10bd5fba20b73280b08623a008
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62766
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Reviewed-by: Tim Crawford <tcrawford@system76.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/deltaur/Kconfig b/src/mainboard/google/deltaur/Kconfig
index 492bcbb..eb27796 100644
--- a/src/mainboard/google/deltaur/Kconfig
+++ b/src/mainboard/google/deltaur/Kconfig
@@ -36,9 +36,6 @@
 	select GBB_FLAG_FORCE_DEV_BOOT_USB
 	select GBB_FLAG_FORCE_DEV_SWITCH_ON
 
-config DIMM_SPD_SIZE
-	default 512
-
 config DEVICETREE
 	default "variants/baseboard/devicetree.cb"
 
diff --git a/src/mainboard/google/volteer/Kconfig b/src/mainboard/google/volteer/Kconfig
index eb8f176..4f83d1c 100644
--- a/src/mainboard/google/volteer/Kconfig
+++ b/src/mainboard/google/volteer/Kconfig
@@ -144,9 +144,6 @@
 	select SAR_ENABLE
 	select USE_SAR
 
-config DIMM_SPD_SIZE
-	default 512
-
 config DEVICETREE
 	default "variants/baseboard/devicetree.cb"
 
diff --git a/src/mainboard/intel/tglrvp/Kconfig b/src/mainboard/intel/tglrvp/Kconfig
index 9e63f2c..8a4c9ad 100644
--- a/src/mainboard/intel/tglrvp/Kconfig
+++ b/src/mainboard/intel/tglrvp/Kconfig
@@ -60,9 +60,6 @@
 config DEVICETREE
 	default "variants/\$(CONFIG_VARIANT_DIR)/devicetree.cb"
 
-config DIMM_SPD_SIZE
-	default 512
-
 choice
 	prompt "ON BOARD EC"
 	default TGL_CHROME_EC
diff --git a/src/mainboard/starlabs/labtop/Kconfig b/src/mainboard/starlabs/labtop/Kconfig
index 0f7d108..f8a5bc7 100644
--- a/src/mainboard/starlabs/labtop/Kconfig
+++ b/src/mainboard/starlabs/labtop/Kconfig
@@ -46,9 +46,6 @@
 config DEVICETREE
 	default "variants/\$(CONFIG_VARIANT_DIR)/devicetree.cb"
 
-config DIMM_SPD_SIZE
-	default 512
-
 config DRIVER_TPM_SPI_CHIP
 	default 2
 
diff --git a/src/mainboard/system76/darp7/Kconfig b/src/mainboard/system76/darp7/Kconfig
index 75d8e1d..960e5ae 100644
--- a/src/mainboard/system76/darp7/Kconfig
+++ b/src/mainboard/system76/darp7/Kconfig
@@ -44,9 +44,6 @@
 config CONSOLE_POST
 	default y
 
-config DIMM_SPD_SIZE
-	default 512
-
 config POST_DEVICE
 	default n
 
diff --git a/src/mainboard/system76/galp5/Kconfig b/src/mainboard/system76/galp5/Kconfig
index bb4b2ea..98e32f7 100644
--- a/src/mainboard/system76/galp5/Kconfig
+++ b/src/mainboard/system76/galp5/Kconfig
@@ -43,9 +43,6 @@
 config CONSOLE_POST
 	default y
 
-config DIMM_SPD_SIZE
-	default 512
-
 config ONBOARD_VGA_IS_PRIMARY
 	default y
 
diff --git a/src/mainboard/system76/gaze16/Kconfig b/src/mainboard/system76/gaze16/Kconfig
index daf3302..cc96d5f 100644
--- a/src/mainboard/system76/gaze16/Kconfig
+++ b/src/mainboard/system76/gaze16/Kconfig
@@ -55,9 +55,6 @@
 config CONSOLE_POST
 	default y
 
-config DIMM_SPD_SIZE
-	default 512
-
 config ONBOARD_VGA_IS_PRIMARY
 	default y
 
diff --git a/src/mainboard/system76/lemp10/Kconfig b/src/mainboard/system76/lemp10/Kconfig
index fc8abba..a732425 100644
--- a/src/mainboard/system76/lemp10/Kconfig
+++ b/src/mainboard/system76/lemp10/Kconfig
@@ -44,9 +44,6 @@
 config CONSOLE_POST
 	default y
 
-config DIMM_SPD_SIZE
-	default 512
-
 config POST_DEVICE
 	default n
 
diff --git a/src/mainboard/system76/oryp8/Kconfig b/src/mainboard/system76/oryp8/Kconfig
index 958cda8..8e65b70 100644
--- a/src/mainboard/system76/oryp8/Kconfig
+++ b/src/mainboard/system76/oryp8/Kconfig
@@ -49,9 +49,6 @@
 config DIMM_MAX
 	default 4
 
-config DIMM_SPD_SIZE
-	default 512
-
 config ONBOARD_VGA_IS_PRIMARY
 	default y
 
diff --git a/src/soc/intel/tigerlake/Kconfig b/src/soc/intel/tigerlake/Kconfig
index 6d20112..2b673cab 100644
--- a/src/soc/intel/tigerlake/Kconfig
+++ b/src/soc/intel/tigerlake/Kconfig
@@ -94,6 +94,9 @@
 	default 16 if SOC_INTEL_TIGERLAKE_PCH_H
 	default 8
 
+config DIMM_SPD_SIZE
+	default 512
+
 config DCACHE_RAM_BASE
 	default 0xfef00000