drm: direct include of drm.h in drm_prime.c

Do not rely on including drm.h from drm_file.h,
as the include in drm_file.h will be dropped.

Signed-off-by: Sam Ravnborg <[email protected]>
Reviewed-by: Sean Paul <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Christian König <[email protected]>
Cc: Noralf Trønnes <[email protected]>
Cc: Chris Wilson <[email protected]>
Cc: Eric Anholt <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 189d980..eca4841 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -30,6 +30,7 @@
 #include <linux/dma-buf.h>
 #include <linux/rbtree.h>
 
+#include <drm/drm.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_file.h>
 #include <drm/drm_framebuffer.h>