QCamera2: Introduce enum for Hotpixel modes.

This enumeration provides the ability to distinguish between
FAST and HIGH_QUALITY modes for Hotpixel.

Change-Id: I18078ea3f50956c0de80537c92b37821816cd133
diff --git a/camera/QCamera2/stack/common/cam_types.h b/camera/QCamera2/stack/common/cam_types.h
index 93e9d87..704bcbf 100644
--- a/camera/QCamera2/stack/common/cam_types.h
+++ b/camera/QCamera2/stack/common/cam_types.h
@@ -618,6 +618,12 @@
 } cam_black_level_lock_t;
 
 typedef enum {
+    CAM_HOTPIXEL_MODE_OFF,
+    CAM_HOTPIXEL_MODE_FAST,
+    CAM_HOTPIXEL_MODE_HIGH_QUALITY,
+} cam_hotpixel_mode_t;
+
+typedef enum {
     CAM_LENS_SHADING_MAP_MODE_OFF,
     CAM_LENS_SHADING_MAP_MODE_ON,
 } cam_lens_shading_map_mode_t;