coreboot: Replace all IS_ENABLED(CONFIG_XXX) with CONFIG(XXX)

This patch is a raw application of

 find src/ -type f | xargs sed -i -e 's/IS_ENABLED\s*(CONFIG_/CONFIG(/g'

Change-Id: I6262d6d5c23cabe23c242b4f38d446b74fe16b88
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31774
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/soc/intel/cannonlake/cpu.c

@@ -497,7 +497,7 @@ 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 (!IS_ENABLED(CONFIG_SOC_INTEL_COMMON_CANNONLAKE_BASE))
+	if (!CONFIG(SOC_INTEL_COMMON_CANNONLAKE_BASE))
 		return 0;
 
 	/*