msm: camera: Add support to V4L2 architecture

New targets are following V4L2 architecture for
camera. Update 7x27a camera drivers to support
new V4L2 architecture to unify all camera drivers
in the same architecture.

Signed-off-by: Suresh Vankadara <svankada@codeaurora.org>
Change-Id: Ie23ac982375041c06b68537d5784d8cdbbc9bf04
diff --git a/include/media/msm_camera.h b/include/media/msm_camera.h
index a984943..d905b22 100644
--- a/include/media/msm_camera.h
+++ b/include/media/msm_camera.h
@@ -401,6 +401,7 @@
 #define CMD_CONFIG_FREE_BUF_ADDR 48
 #define CMD_AXI_CFG_ZSL_ALL_CHNLS 49
 #define CMD_AXI_CFG_VIDEO_ALL_CHNLS 50
+#define CMD_VFE_BUFFER_RELEASE 51
 
 /* vfe config command: config command(from config thread)*/
 struct msm_vfe_cfg_cmd {