Rename ECAM-specific MMCONF Kconfigs

Currently, the MMCONF Kconfigs only support the Enhanced Configuration
Access mechanism (ECAM) method for accessing the PCI config address
space.  Some platforms have a different way of mapping the PCI config
space to memory.  This patch renames the following configs to
make it clear that these configs are ECAM-specific:

- NO_MMCONF_SUPPORT --> NO_ECAM_MMCONF_SUPPORT
- MMCONF_SUPPORT --> ECAM_MMCONF_SUPPORT
- MMCONF_BASE_ADDRESS --> ECAM_MMCONF_BASE_ADDRESS
- MMCONF_BUS_NUMBER --> ECAM_MMCONF_BUS_NUMBER
- MMCONF_LENGTH --> ECAM_MMCONF_LENGTH

Please refer to CB:57861 "Proposed coreboot Changes" for more
details.

BUG=b:181098581
BRANCH=None
TEST=./util/abuild/abuild -p none -t GOOGLE_KOHAKU -x -a -c max
     Make sure Jenkins verifies that builds on other boards

Change-Id: I1e196a1ed52d131a71f00cba1d93a23e54aca3e2
Signed-off-by: Shelley Chen <shchen@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57333
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/payloads/external/tianocore/Makefile b/payloads/external/tianocore/Makefile
index 0c5fdb3..a4ccfc7 100644
--- a/payloads/external/tianocore/Makefile
+++ b/payloads/external/tianocore/Makefile
@@ -9,7 +9,7 @@
 project_git_branch=uefipayload_202107
 upstream_git_repo=https://github.com/tianocore/edk2
 
-build_flavor=-D BOOTLOADER=COREBOOT -D PCIE_BASE=$(CONFIG_MMCONF_BASE_ADDRESS) -DPS2_KEYBOARD_ENABLE
+build_flavor=-D BOOTLOADER=COREBOOT -D PCIE_BASE=$(CONFIG_ECAM_MMCONF_BASE_ADDRESS) -DPS2_KEYBOARD_ENABLE
 
 ifeq ($(CONFIG_TIANOCORE_COREBOOTPAYLOAD),y)
 project_git_branch=coreboot_fb