drm/rockchip: vop: fix vop vsync/hsync polarity
drm/rockchip: vop: fix vop vsync/hsync polarity

Vop set wrong vsync/hsync polarity, it may cause some
display problem. known problem is that caused HDMI hdcp
authenticate failed, caused pixel offset with hdmi display.
the polarity description at RK3288 TRM doc:
  dsp_vsync_pol
    VSYNC polarity
      1'b0 : negative
      1'b1 : positive
      dsp_hsync_pol
    HSYNC polarity
      1'b0 : negative
      1'b1 : positive

Signed-off-by: Mark Yao <02a1f934a8f8e15762fa0cc676ca9ba75e0db935@rock-chips.com>
Reviewed-by: Daniel Kurtz <31914e832df1cd8e5daa417106c0c6f5297b27d7@chromium.org>
Tested-by: Caesar Wang <6a97ab1d8fae3a62719c8e695586fe709398a94a@rock-chips.com>
Tested-by: Heiko Stuebner <9ab5f52a1ca0bcf4f70d6d9008e02f6134b5b8f2@sntech.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs