src: Update bare access to BOOL CONFIG_ vals to CONFIG()

BOOL type Kconfig values should be used through the CONFIG() macro.
These instances were not, so update them.

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: Ie4706d82c12c487607bbf5ad8059922e0e586858
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43825
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/soc/intel/apollolake/chip.c

@@ -668,7 +668,7 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *silupd)
 	if (!CONFIG(SOC_INTEL_GLK))
 		silconfig->MonitorMwaitEnable = 0;
 
-	silconfig->SkipMpInit = !CONFIG_USE_INTEL_FSP_MP_INIT;
+	silconfig->SkipMpInit = !CONFIG(USE_INTEL_FSP_MP_INIT);
 
 	/* Disable setting of EISS bit in FSP. */
 	silconfig->SpiEiss = 0;