drm/msm/sde: update plane scaler configs when disabled

Update the plane state and eventually the pipe hw configs
when user-mode disables the scaler through setproperty.

Change-Id: I87ff3ecebd2e402b7046726fb4c7a392e6350f13
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>