(VideoPlayer) Increase tbm_surface_h refcount what we hold + minor fix

(VideoPlayer) Increase tbm_surface_h refcount what we hold + minor fix

Since we only got tbm_surface_h from packet and don't do anything,
the reference of tbm might not valid when we want to really use it.

To avoid this case, let's keep the reference count of tbm_surface_h
at SetInfo.

Note that SetSource will increase and decrease refcount automatically.
We don't need to worry after SetSource

Change-Id: Ice5f16ecef2414cfe16e2cb12597a8231bd24d76
Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>