drm: include drm.h in armada_drm.h

Signed-off-by: Gabriel Laskar <gabriel@lse.epita.fr>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
CC: Emil Velikov <emil.l.velikov@gmail.com>
CC: Mikko Rapeli <mikko.rapeli@iki.fi>

include/uapi/drm/armada_drm.h

@@ -9,6 +9,8 @@
 #ifndef DRM_ARMADA_IOCTL_H
 #define DRM_ARMADA_IOCTL_H
 
+#include "drm.h"
+
 #define DRM_ARMADA_GEM_CREATE		0x00
 #define DRM_ARMADA_GEM_MMAP		0x02
 #define DRM_ARMADA_GEM_PWRITE		0x03