drm/print: Include drm_device.h

The header drm_print.h uses members of struct drm_device pointers, as
such, it should include drm_device.h to let the compiler know the full
type definition.

Without such include, users of drm_print.h that don't explicitly need
drm_device.h would bump into build errors and be forced to include the
latter.

Signed-off-by: Gustavo Sousa <[email protected]>
Reviewed-by: Jani Nikula <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Lucas De Marchi <[email protected]>

Author: guludo

include/drm/drm_print.h

@@ -32,6 +32,7 @@
 #include <linux/dynamic_debug.h>
 
 #include <drm/drm.h>
+#include <drm/drm_device.h>
 
 struct debugfs_regset32;
 struct drm_device;