soc/intel/skylake: Make use of common CSE code for skylake

TEST=Ensures global reset could able to reset system.

Change-Id: I11ce1812a5a0aa2da6b414555374460d606e220e
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/22395
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/skylake/Kconfig

@@ -54,6 +54,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK
 	select SOC_INTEL_COMMON_BLOCK_CPU
 	select SOC_INTEL_COMMON_BLOCK_CPU_MPINIT
+	select SOC_INTEL_COMMON_BLOCK_CSE
 	select SOC_INTEL_COMMON_BLOCK_EBDA
 	select SOC_INTEL_COMMON_BLOCK_FAST_SPI
 	select SOC_INTEL_COMMON_BLOCK_GPIO