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/include/device/dram/ddr3.h

@@ -56,7 +56,7 @@
  * disabled.
  * @{
  */
-#if IS_ENABLED(CONFIG_DEBUG_RAM_SETUP)
+#if CONFIG(DEBUG_RAM_SETUP)
 #define printram(x, ...) printk(BIOS_DEBUG, x, ##__VA_ARGS__)
 #else
 #define printram(x, ...)