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/northbridge/intel/gm45/gma.c b/src/northbridge/intel/gm45/gma.c
index 4a5ebbd..648aa48 100644
--- a/src/northbridge/intel/gm45/gma.c
+++ b/src/northbridge/intel/gm45/gma.c
@@ -190,7 +190,7 @@
 	mmio = res2mmio(gtt_res, 0, 0);
 
 
-	if (!IS_ENABLED(CONFIG_MAINBOARD_USE_LIBGFXINIT)) {
+	if (!CONFIG(MAINBOARD_USE_LIBGFXINIT)) {
 		/* PCI Init, will run VBIOS */
 		printk(BIOS_DEBUG, "Initialising IGD using VBIOS\n");
 		pci_dev_init(dev);
@@ -205,7 +205,7 @@
 	/* Post VBIOS init */
 	gma_pm_init_post_vbios(dev, edid_lvds.ascii_string);
 
-	if (IS_ENABLED(CONFIG_MAINBOARD_USE_LIBGFXINIT)) {
+	if (CONFIG(MAINBOARD_USE_LIBGFXINIT)) {
 		int vga_disable = (pci_read_config16(dev, D0F0_GGC) & 2) >> 1;
 		if (vga_disable) {
 			printk(BIOS_INFO,