msm: camera: Include Minimum Luma in Stats buffer

Include Minimum Luma Pixel value in Stats buffer
for AWB stats process.

Signed-off-by: Lakshmi Narayana Kalavala <lkalaval@codeaurora.org>
diff --git a/include/media/msm_camera.h b/include/media/msm_camera.h
index 7141213..974e130 100644
--- a/include/media/msm_camera.h
+++ b/include/media/msm_camera.h
@@ -568,6 +568,7 @@
 };
 
 struct msm_stats_buf {
+	uint8_t awb_ymin;
 	struct stats_buff aec;
 	struct stats_buff awb;
 	struct stats_buff af;