liboverlay: ensure open fd's are always closed

Ensures that reset and  mFd.Close is always called when MdpCtrl
and MdpData are closed down.

Acked-by: Arun Kumar K.R <akumarkr@codeaurora.org>
Change-Id: I775ba7cfe45c67e6acf874e3f4e8b4fa6fbe33b8
2 files changed