R3 supports 3 camera_vsync

Make definition consitent by using CAMERA_VSYNC_COUNT for
number of camera_vsync.

Bug: 142108845
Test: Verify the count of camera vsync with command:
      adb shell dumpsys sensorservice | egrep "camera v-sync"
Change-Id: I29d36484ad0e35538b7edee83d5dc125da0ebb83
Signed-off-by: emilchung <emilchung@google.com>
1 file changed