soc/intel/meteorlake: Add required configs to enable eNEM

This patch combines all required configs under one umbrella config
named `METEORLAKE_CAR_ENHANCED_NEM`.

MTL SoC to select this config if default NEM (INTEL_CAR_NEM) is not
selected.

BUG=b:217130861
TEST=Able to build and boot Google/Rex.

Change-Id: Iceab7cdf2973f3858d4aa83fb431ba832c0868d6
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70672
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>

src/soc/intel/meteorlake/Kconfig

@@ -101,6 +101,14 @@ config SOC_INTEL_METEORLAKE_TCSS_USB4_SUPPORT
 	select SOC_INTEL_COMMON_BLOCK_USB4_PCIE
 	select SOC_INTEL_COMMON_BLOCK_USB4_XHCI
 
+config METEORLAKE_CAR_ENHANCED_NEM
+	bool
+	default y if !INTEL_CAR_NEM
+	select INTEL_CAR_NEM_ENHANCED
+	select CAR_HAS_SF_MASKS
+	select COS_MAPPED_TO_MSB
+	select CAR_HAS_L3_PROTECTED_WAYS
+
 config MAX_CPUS
 	int
 	default 22