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/console/console.c

@@ -79,7 +79,7 @@ void console_write_line(uint8_t *buffer, size_t number_of_bytes)
 }
 
 
-#if IS_ENABLED(CONFIG_GDB_STUB) && (ENV_ROMSTAGE || ENV_RAMSTAGE)
+#if CONFIG(GDB_STUB) && (ENV_ROMSTAGE || ENV_RAMSTAGE)
 void gdb_hw_init(void)
 {
 	__gdb_hw_init();