camera: fix `-Wpessimizing-move` compiler warnings

Test: add `USE_CAMERA_V4L2_HAL := true` to
      hardware/libhardware/modules/camera/3_4/Android.mk and build
      mmm hardware/libhardware/modules/camera/3_4
Change-Id: I464761128a09d90415ee6ac1ef1244391edb0b54
Signed-off-by: Sergii Piatakov <sergii.piatakov@globallogic.com>
1 file changed