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/chip.h

@@ -30,7 +30,7 @@
 #include <soc/serialio.h>
 #include <soc/usb.h>
 #include <soc/vr_config.h>
-#if IS_ENABLED(CONFIG_SOC_INTEL_CANNONLAKE_PCH_H)
+#if CONFIG(SOC_INTEL_CANNONLAKE_PCH_H)
 #include <soc/gpio_defs_cnp_h.h>
 #else
 #include <soc/gpio_defs.h>
@@ -107,7 +107,7 @@ struct soc_intel_cannonlake_config {
 	enum {
 		SaGv_Disabled,
 		SaGv_FixedLow,
-#if !IS_ENABLED(CONFIG_SOC_INTEL_COMMON_CANNONLAKE_BASE)
+#if !CONFIG(SOC_INTEL_COMMON_CANNONLAKE_BASE)
 		SaGv_FixedMid,
 #endif
 		SaGv_FixedHigh,