drm/rockchip: vop2: Add missing call to crtc reset helper

drm/rockchip: vop2: Add missing call to crtc reset helper

[ Upstream commit 4d49d87b3606369c6e29b9d051892ee1a6fc4e75 ]

Add missing call to crtc reset helper to properly vblank reset.

Also move vop2_crtc_reset and call vop2_crtc_destroy_state to simplify
and remove duplicated code.

Fixes: 604be85547ce ("drm/rockchip: Add VOP2 driver")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230621223311.2239547-6-jonas@kwiboo.se
Signed-off-by: Sasha Levin <sashal@kernel.org>