msm: camera: Enqueue native buffer directly

For native buffer, when userspace queue back
the buffer from userspace, whether the buffer
is clean/dirty, the buffer should go back to
the native buffer queue, otherwise the buffer
will be in invalid state.

Change-Id: Ia41bb950d39e144e251d0feea099d4a517a11852
Signed-off-by: Kevin Chan <ktchan@codeaurora.org>