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/arch/x86/cpu.c b/src/arch/x86/cpu.c
index d070dd9..80d4d0d 100644
--- a/src/arch/x86/cpu.c
+++ b/src/arch/x86/cpu.c
@@ -284,7 +284,7 @@
 	struct lb_tsc_info *tsc_info;
 
 	/* Don't advertise a TSC rate unless it's constant. */
-	if (!IS_ENABLED(CONFIG_TSC_CONSTANT_RATE))
+	if (!CONFIG(TSC_CONSTANT_RATE))
 		return;
 
 	freq_khz = tsc_freq_mhz() * 1000;
@@ -302,7 +302,7 @@
 void arch_bootstate_coreboot_exit(void)
 {
 	/* APs are already parked by existing infrastructure. */
-	if (!IS_ENABLED(CONFIG_PARALLEL_MP_AP_WORK))
+	if (!CONFIG(PARALLEL_MP_AP_WORK))
 		return;
 
 	/* APs are waiting for work. Last thing to do is park them. */