drm/i915/huc: Fix includes in intel_huc.c

Fix includes order and make sure we only include required headers.
While here, make intel_huc.h header self-contained.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171006090209.67852-1-michal.wajdeczko@intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_huc.c b/drivers/gpu/drm/i915/intel_huc.c
index 3f796fe..4b4cf56 100644
--- a/drivers/gpu/drm/i915/intel_huc.c
+++ b/drivers/gpu/drm/i915/intel_huc.c
@@ -21,9 +21,11 @@
  * IN THE SOFTWARE.
  *
  */
-#include <linux/firmware.h>
+
+#include <linux/types.h>
+
+#include "intel_huc.h"
 #include "i915_drv.h"
-#include "intel_uc.h"
 
 /**
  * DOC: HuC Firmware