soc/intel/cannonlake: Use common p2sb driver

Add common p2sb driver support.

TEST=Boot up into OS and read back pcr mmio address by iotools, return
is not 0xffffffff.

Change-Id: Ida66663e6daabfcb94d7e3224d75b118fc7cf829
Signed-off-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/22190
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/cannonlake/Kconfig

@@ -54,6 +54,7 @@ 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_PCR
 	select SOC_INTEL_COMMON_BLOCK_PMC
 	select SOC_INTEL_COMMON_BLOCK_RTC