Add support for Rockchip RK3328 VOP.

Require VOP cleanup before handoff to Linux by writing reset values to
WIN registers. Without this Linux VOP trigger page fault as below
[    0.752016] Loading compiled-in X.509 certificates
[    0.787796] inno_hdmi_phy_rk3328_clk_recalc_rate: parent 24000000
[    0.788391] inno-hdmi-phy ff430000.phy: inno_hdmi_phy_rk3328_clk_recalc_rate rate 148500000 vco 148500000
[    0.798353] rockchip-drm display-subsystem: bound ff370000.vop (ops vop_component_ops)
[    0.799403] dwhdmi-rockchip ff3c0000.hdmi: supply avdd-0v9 not found, using dummy regulator
[    0.800288] rk_iommu ff373f00.iommu: Enable stall request timed out, status: 0x00004b
[    0.801131] dwhdmi-rockchip ff3c0000.hdmi: supply avdd-1v8 not found, using dummy regulator
[    0.802056] rk_iommu ff373f00.iommu: Disable paging request timed out, status: 0x00004b
[    0.803233] dwhdmi-rockchip ff3c0000.hdmi: Detected HDMI TX controller v2.11a with HDCP (inno_dw_hdmi_phy2)
[    0.805355] dwhdmi-rockchip ff3c0000.hdmi: registered DesignWare HDMI I2C bus driver
[    0.808769] rockchip-drm display-subsystem: bound ff3c0000.hdmi (ops dw_hdmi_rockchip_ops)
[    0.810869] [drm] Initialized rockchip 1.0.0 20140818 for display-subsystem on minor 0

Signed-off-by: Jagan Teki <jagan@edgeble.ai>