drm_mode.h: use __u32 and __u64 from linux/types.h

Fixes userspace compilation error:

drm/drm_mode.h:472:2: error: unknown type name ‘uint32_t’
Signed-off-by: Mikko Rapeli <mikko.rapeli@iki.fi>

include/uapi/drm/drm_mode.h

@@ -526,14 +526,14 @@ struct drm_mode_crtc_page_flip {
 
 /* create a dumb scanout buffer */
 struct drm_mode_create_dumb {
-	uint32_t height;
-	uint32_t width;
-	uint32_t bpp;
-	uint32_t flags;
+	__u32 height;
+	__u32 width;
+	__u32 bpp;
+	__u32 flags;
 	/* handle, pitch, size will be returned */
-	uint32_t handle;
-	uint32_t pitch;
-	uint64_t size;
+	__u32 handle;
+	__u32 pitch;
+	__u64 size;
 };
 
 /* set up for mmap of a dumb scanout buffer */
@@ -550,7 +550,7 @@ struct drm_mode_map_dumb {
 };
 
 struct drm_mode_destroy_dumb {
-	uint32_t handle;
+	__u32 handle;
 };
 
 /* page-flip flags are valid, plus: */