Fixes: 41016fe1028e4 (drm: Rename plane->state variables in atomic update and disable)
dma buffer release before overlay disable, that will cause
m4u translation fault warning.
add dma buffer control flow in mediatek driver:
get dma buffer when drm plane disable
put dma buffer when overlay really disable
Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>