drm/nouveau/dispnv50: Restore pushing of all data.

Commit f844eb48 introduced a regression for
NV50, which lead to visual artifacts, tearing and eventual crashes.

In the changes of f844eb48

 only the first line
was correctly translated to the new NVIDIA header macros:

-		PUSH_NVSQ(push, NV827C, 0x0110, 0,
-					0x0114, 0);
+		PUSH_MTHD(push, NV827C, SET_PROCESSING,
+			  NVDEF(NV827C, SET_PROCESSING, USE_GAIN_OFS, DISABLE));

The lower part ("0x0114, 0") was probably omitted by accident.

This patch restores the push of the missing data and fixes the regression.

Signed-off-by: Bastian Beranek <bastian.beischer@rwth-aachen.de>
Fixes: f844eb48

 ("drm/nouveau/kms/nv50-: use NVIDIA's headers for wndw image_set()")
Link: https://gitlab.freedesktop.org/drm/nouveau/-/issues/14
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>