[PATCH] drm: Include missing header

[Bo Liu]

The file drm_nomodeset.c missed the header drm_drv.h, which
resulted on the following warning:

drivers/gpu/drm/drm_nomodeset.c:8:6:
warning: no previous prototype for 'drm_firmware_drivers_only'
[-Wmissing-prototypes]

Signed-off-by: Bo Liu <liubo03 at inspur.com>
---
 drivers/gpu/drm/drm_nomodeset.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/drm_nomodeset.c b/drivers/gpu/drm/drm_nomodeset.c
index f3978d5bd3a1..9402deb4985f 100644
--- a/drivers/gpu/drm/drm_nomodeset.c
+++ b/drivers/gpu/drm/drm_nomodeset.c
@@ -2,6 +2,7 @@
 
 #include <linux/module.h>
 #include <linux/types.h>
+#include <drm/drm_drv.h>
 
 static bool drm_nomodeset;
 
-- 
2.27.0