soc/intel/apollolake: Use XDCI common code

This patch performs apollolake specific XDCI
controller initialization.

Change-Id: I4649bffe1bb90d7df6a72b5334793bf8f0fdbaeb
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/19429
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/apollolake/Kconfig

@@ -62,6 +62,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_RTC
 	select SOC_INTEL_COMMON_BLOCK_SA
 	select SOC_INTEL_COMMON_BLOCK_UART
+	select SOC_INTEL_COMMON_BLOCK_XDCI
 	select SOC_INTEL_COMMON_BLOCK_XHCI
 	select SOC_INTEL_COMMON_LPSS_I2C
 	select SOC_INTEL_COMMON_SMI