soc/intel/skylake: Use common systemagent code

This patch perform resource mapping for PCI,
fixed MMIO, DRAM and IMR's based on inputs given by SoC.

TEST=Ensure PCI root bridge 0:0:0 memory resource allocation
remains same between previous implementation and current
implementation.

Change-Id: I93567a79b2d12dd5d6363957e55ce2cb86ff83a7
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/19796
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/soc/intel/skylake/Kconfig b/src/soc/intel/skylake/Kconfig
index 12dd772..763b963 100644
--- a/src/soc/intel/skylake/Kconfig
+++ b/src/soc/intel/skylake/Kconfig
@@ -48,6 +48,7 @@
 	select RELOCATABLE_MODULES
 	select RELOCATABLE_RAMSTAGE
 	select RTC
+	select SA_ENABLE_DPR
 	select SOC_INTEL_COMMON
 	select SOC_INTEL_COMMON_ACPI_WAKE_SOURCE
 	select SOC_INTEL_COMMON_BLOCK