soc/intel/skylake: Add option to skip coreboot MP init

This patch provides option for mainboard to skip coreboot MP
initialization if required based on use_fsp_mp_init.

Option for mainboard to skip coreboot MP initialization
* 0 = Make use of coreboot MP Init
* 1 = Make use of FSP MP Init

Default coreboot does MP initialization.

Change-Id: I8de24e662963f4600209ad1b110dc950ecfb3a27
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/26818
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/skylake/chip_fsp20.c b/src/soc/intel/skylake/chip_fsp20.c
index 0ba70e0..227e244 100644
--- a/src/soc/intel/skylake/chip_fsp20.c
+++ b/src/soc/intel/skylake/chip_fsp20.c
@@ -387,7 +387,7 @@
 	params->PchSirqEnable = config->SerialIrqConfigSirqEnable;
 	params->PchSirqMode = config->SerialIrqConfigSirqMode;
 
-	params->CpuConfig.Bits.SkipMpInit = config->FspSkipMpInit;
+	params->CpuConfig.Bits.SkipMpInit = !config->use_fsp_mp_init;
 
 	for (i = 0; i < ARRAY_SIZE(config->i2c); i++)
 		params->SerialIoI2cVoltage[i] = config->i2c_voltage[i];