soc/intel/tgl and tgl mb/google,intel: Use the newly added meminit block driver

This change uses the newly added meminit block driver and updates TGL
SoC and mainboard code accordingly.

TEST=Verified that UPDs are configured correctly with and without this
change.

Change-Id: I6d58cd6568b7bbe03c4e3011b2301209893e85a9
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49042
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>

src/soc/intel/tigerlake/Kconfig

@@ -54,6 +54,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_GPIO_IOSTANDBY
 	select SOC_INTEL_COMMON_BLOCK_GSPI_VERSION_2
 	select SOC_INTEL_COMMON_BLOCK_HDA
+	select SOC_INTEL_COMMON_BLOCK_MEMINIT
 	select SOC_INTEL_COMMON_BLOCK_PCIE_RTD3
 	select SOC_INTEL_COMMON_BLOCK_SA
 	select SOC_INTEL_COMMON_BLOCK_SMM
@@ -250,4 +251,16 @@ config EARLY_TCSS_DISPLAY
 	help
 	  Enable displays to be detected over Type-C ports during boot.
 
+config DATA_BUS_WIDTH
+	int
+	default 128
+
+config DIMMS_PER_CHANNEL
+	int
+	default 2
+
+config MRC_CHANNEL_WIDTH
+	int
+	default 16
+
 endif