msm: camera: add fields to msm_stats_buf for cache operations.

Add a couple of fields to the msm_stats_buf structure
for cache coherence support on stats buffers from
user-space.

Change-Id: I3553fcf6359e4e748eb309d4a0a5979999d96f09
Signed-off-by: Ankit Premrajka <ankitp@codeaurora.org>
diff --git a/include/media/msm_camera.h b/include/media/msm_camera.h
index cf7157c..a448df6 100644
--- a/include/media/msm_camera.h
+++ b/include/media/msm_camera.h
@@ -642,6 +642,8 @@
 	uint32_t status_bits;
 	unsigned long buffer;
 	int fd;
+	int length;
+	struct ion_handle *handle;
 	uint32_t frame_id;
 };
 #define MSM_V4L2_EXT_CAPTURE_MODE_DEFAULT 0