drm/amdgpu: make amd_asic_type.h self-contained

Include <linux/types.h> for u8.

Reviewed-by: Thomas Zimmermann <[e-mail]>
Acked-by: Alex Deucher <[e-mail]>
Signed-off-by: Jani Nikula <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/115[e-mail]

include/drm/amd_asic_type.h

···
 
 #ifndef __AMD_ASIC_TYPE_H__
 #define __AMD_ASIC_TYPE_H__
+
+#include <linux/types.h>
+
 /*
  * Supported ASIC types
  */