soc/intel/skylake: Select common P2SB code

This patch select CONFIG_SOC_INTEL_COMMON_BLOCK_P2SB to include
common p2sb code block.

BUG=b:78109109
BRANCH=none
TEST=Build and boot EVE.

Change-Id: I3f6aa6398e409a05a35766fb7aeb3aa221dd3970
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/26165
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/skylake/Kconfig

@@ -71,6 +71,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_ITSS
 	select SOC_INTEL_COMMON_BLOCK_LPC
 	select SOC_INTEL_COMMON_BLOCK_LPSS
+	select SOC_INTEL_COMMON_BLOCK_P2SB
 	select SOC_INTEL_COMMON_BLOCK_PCIE
 	select SOC_INTEL_COMMON_BLOCK_PCR
 	select SOC_INTEL_COMMON_BLOCK_PMC