drm: mali-dp: Don't force source size == crtc size

Remove the check enforcing that src_w and src_h match crtc_w and crtc_h,
as this prevents rotation from working.

The check was intended to disallow scaling, but
drm_plane_helper_check_state() does that for us, while also taking
rotation into account, so the removed check was redundant in any case.
Signed-off-by: NBrian Starkey <brian.starkey@arm.com>
Signed-off-by: NLiviu Dudau <liviu.dudau@arm.com>

drivers/gpu/drm/arm/malidp_planes.c

@@ -135,8 +135,7 @@ static int malidp_de_plane_check(struct drm_plane *plane,
 	if ((state->crtc_w > mp->hwdev->max_line_size) ||
 	    (state->crtc_h > mp->hwdev->max_line_size) ||
 	    (state->crtc_w < mp->hwdev->min_line_size) ||
-	    (state->crtc_h < mp->hwdev->min_line_size) ||
-	    (state->crtc_w != src_w) || (state->crtc_h != src_h))
+	    (state->crtc_h < mp->hwdev->min_line_size))
 		return -EINVAL;
 
 	/* packed RGB888 / BGR888 can't be rotated or flipped */