drm/i915: add HAS_BSD check to i915_getparam

This will let userland only try to use the new media decode
functionality when the appropriate kernel is present.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index e916870..7f0028e 100644
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -275,6 +275,7 @@
 #define I915_PARAM_HAS_OVERLAY           7
 #define I915_PARAM_HAS_PAGEFLIPPING	 8
 #define I915_PARAM_HAS_EXECBUF2          9
+#define I915_PARAM_HAS_BSD		 10
 
 typedef struct drm_i915_getparam {
 	int param;