soc/intel/common: Remove common chip config use_fsp_mp_init

This patch ensures to make use of common MP Init Kconfig to
choose desire method to peform MP initialization for platform.

Change-Id: I4ee51276026748e8daf154f89e57095e8fe50280
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30289
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/soc/intel/skylake/chip.c

@@ -197,7 +197,7 @@ void soc_silicon_init_params(SILICON_INIT_UPD *params)
 	params->SerialIrqConfigStartFramePulse =
 		config->SerialIrqConfigStartFramePulse;
 
-	params->SkipMpInit = !chip_get_fsp_mp_init();
+	params->SkipMpInit = !CONFIG_USE_INTEL_FSP_MP_INIT;
 
 	for (i = 0; i < ARRAY_SIZE(config->i2c_voltage); i++)
 		params->SerialIoI2cVoltage[i] = config->i2c_voltage[i];