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>
diff --git a/src/soc/amd/stoneyridge/northbridge.c b/src/soc/amd/stoneyridge/northbridge.c
index 6c2637f..927cce0 100644
--- a/src/soc/amd/stoneyridge/northbridge.c
+++ b/src/soc/amd/stoneyridge/northbridge.c
@@ -237,7 +237,7 @@
 	current += hest->header.length;
 
 	/* BERT */
-	if (IS_ENABLED(CONFIG_ACPI_BERT) && bert_errors_present()) {
+	if (CONFIG(ACPI_BERT) && bert_errors_present()) {
 		/* Skip the table if no errors are present.  ACPI driver reports
 		 * a table with a 0-length region:
 		 *   BERT: [Firmware Bug]: table invalid.