soc/intel/cannonlake: Rename SOC_INTEL_COMMON_CANNONLAKE_BASE

What it really means to do is to use different FSP headers.

Change-Id: I3c75d4aac8525ab2639608fb9c1b3a9afef0e943
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33575
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/soc/intel/cannonlake/cpu.c

@@ -500,7 +500,7 @@ int soc_skip_ucode_update(u32 current_patch_id, u32 new_patch_id)
 	 * have this check, where CNL CPU die is not based on KBL CPU
 	 * so skip this check for CNL.
 	 */
-	if (!CONFIG(SOC_INTEL_COMMON_CANNONLAKE_BASE))
+	if (!CONFIG(SOC_INTEL_CANNONLAKE_ALTERNATE_HEADERS))
 		return 0;
 
 	/*