gop: Fix implicit declaration warning introduced in d82dc64b
diff --git a/common/drivers/gop.c b/common/drivers/gop.c
index bc2b915c..dfc82f43 100644
--- a/common/drivers/gop.c
+++ b/common/drivers/gop.c
@@ -8,6 +8,7 @@
#include <drivers/gop.h>
#include <drivers/edid.h>
#include <lib/print.h>
+#include <lib/config.h>
#include <mm/pmm.h>
static uint16_t linear_masks_to_bpp(uint32_t red_mask, uint32_t green_mask,
