Android7.1 修改hdmi默认输出分辨率

相关文件：
kernel/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
kernel/drivers/gpu/drm/drm_edid.c
修改kernel/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c文件如下

修改 def_modes 的值，对应的是 vic 值，如果 4 对应的是
edid_cea_modes 中的：

/* 4 - 1280x720@60Hz */
{ DRM_MODE(“1280x720”, DRM_MODE_TYPE_DRIVER, 74250, 1280, 1390,
1430, 1650, 0, 720, 725, 730, 750, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC),
.vrefresh = 60, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9, },

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
old mode 100644
new mode 100755
index d57d999c50a5…9a2e086f14e8
— a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
— a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2497,7 +2497,10 @@ static int dw_hdmi_connector_get_modes(struc