camera: replace `-Wno-error` flag with `-Werror`

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: Ib7227f189cdcd52698ef1a70b1ad03b2351cb55f
Signed-off-by: Sergii Piatakov <sergii.piatakov@globallogic.com>
1 file changed