soc/intel/skylake: Make use of Intel common DSP block

TEST=Build and boot soraka/eve.

Change-Id: I8be2a90dc4e4c5eb196af57045d2a46b7f0c9722
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/22609
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

@@ -55,6 +55,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SOC_INTEL_COMMON_BLOCK_CPU
 	select SOC_INTEL_COMMON_BLOCK_CPU_MPINIT
 	select SOC_INTEL_COMMON_BLOCK_CSE
+	select SOC_INTEL_COMMON_BLOCK_DSP
 	select SOC_INTEL_COMMON_BLOCK_EBDA
 	select SOC_INTEL_COMMON_BLOCK_FAST_SPI
 	select SOC_INTEL_COMMON_BLOCK_GPIO