soc/intel/mtl: Keep SOC_INTEL_COMMON_BASECODE_RAMTOP for non-ChromeOS

This patch guarantees that non-ChromeOS platforms continue to enable
early caching.

ChromeOS devices, on the other hand, control this configuration through
the motherboard configuration based on the underlying SoC.

BUG=b:306677879
TEST=Enable SOC_INTEL_COMMON_BASECODE_RAMTOP for google/rex.

Change-Id: I412b2b6a807dc0f5f2632f0fbd56bd37689dead3
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79049
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
diff --git a/src/soc/intel/meteorlake/Kconfig b/src/soc/intel/meteorlake/Kconfig
index 923a2b4..e95756f 100644
--- a/src/soc/intel/meteorlake/Kconfig
+++ b/src/soc/intel/meteorlake/Kconfig
@@ -79,7 +79,7 @@
 	select SOC_INTEL_COMMON_BLOCK_XHCI
 	select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG
 	select SOC_INTEL_COMMON_BASECODE
-	select SOC_INTEL_COMMON_BASECODE_RAMTOP
+	select SOC_INTEL_COMMON_BASECODE_RAMTOP if !MAINBOARD_HAS_CHROMEOS
 	select SOC_INTEL_COMMON_FSP_RESET
 	select SOC_INTEL_COMMON_PCH_CLIENT
 	select SOC_INTEL_COMMON_RESET