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/cpu/x86/mtrr/mtrr.c b/src/cpu/x86/mtrr/mtrr.c
index b45d17f..d87c3d4 100644
--- a/src/cpu/x86/mtrr/mtrr.c
+++ b/src/cpu/x86/mtrr/mtrr.c
@@ -36,7 +36,7 @@
 #include <memrange.h>
 #include <cpu/amd/mtrr.h>
 #include <assert.h>
-#if IS_ENABLED(CONFIG_X86_AMD_FIXED_MTRRS)
+#if CONFIG(X86_AMD_FIXED_MTRRS)
 #define MTRR_FIXED_WRBACK_BITS (MTRR_READ_MEM | MTRR_WRITE_MEM)
 #else
 #define MTRR_FIXED_WRBACK_BITS 0
@@ -86,7 +86,7 @@
 {
 	msr_t syscfg;
 
-	if (!IS_ENABLED(CONFIG_X86_AMD_FIXED_MTRRS))
+	if (!CONFIG(X86_AMD_FIXED_MTRRS))
 		return;
 
 	syscfg = rdmsr(SYSCFG_MSR);
@@ -98,7 +98,7 @@
 {
 	msr_t syscfg;
 
-	if (!IS_ENABLED(CONFIG_X86_AMD_FIXED_MTRRS))
+	if (!CONFIG(X86_AMD_FIXED_MTRRS))
 		return;
 
 	syscfg = rdmsr(SYSCFG_MSR);