smdk4412-common: camera: Don't set focus to FOCUS_MODE_TOUCH after taking a picture

After picture has been taken in stock camera app, FocusAreas is resetted to the center
of the preview screen, causing the HAL to detect the non (0,0,0,0,0) as a tap in the
screen.

Change-Id: Id41d108c6bb59a05a0a98efbaef51d14f50741fd
diff --git a/camera/exynos_camera.c b/camera/exynos_camera.c
index 6b6bce3..2335173 100644
--- a/camera/exynos_camera.c
+++ b/camera/exynos_camera.c
@@ -922,9 +922,13 @@
 				if (rc < 0)
 					ALOGE("%s: Unable to set object y position", __func__);
 			}
-		}
 
-		focus_mode = FOCUS_MODE_TOUCH;
+			/* After taking a picture, focus-areas is reseted by stock camera app to the center of the screen */
+			if (! ( (focus_x == (preview_width / 2)) && (focus_y == (preview_height / 2)) )) {
+				//ALOGV("%s focus_mode changed to %d due to focus-areas='%s'", __func__, focus_mode, focus_areas_string);
+				focus_mode = FOCUS_MODE_TOUCH;
+			}
+		}
 
 	}