msm: camera: add support for private general ioctl and event

This change adds support for private commands going to the plugin
and private events with payload going to HAL.

Change-Id: Iceb3c3ad1fdc5f45f3bd552b727456ccf54bc006
Signed-off-by: Ankit Premrajka <ankitp@codeaurora.org>
Signed-off-by: Mingcheng Zhu <mingchen@codeaurora.org>
diff --git a/arch/arm/mach-msm/include/mach/camera.h b/arch/arm/mach-msm/include/mach/camera.h
index a51a6b5..ed35227 100644
--- a/arch/arm/mach-msm/include/mach/camera.h
+++ b/arch/arm/mach-msm/include/mach/camera.h
@@ -406,6 +406,7 @@
 	atomic_t on_heap;
 	struct timespec ts;
 	uint32_t error_code;
+	uint32_t trans_code;
 };
 
 struct msm_device_queue {