drm: panel: add flags to BOE NV110WTM-N61

I forgot to add these when posting up the support for BOE
NV110WTM-N61.  Add them now.

Fixes: a96ee0f6 ("drm: panel: simple: Add BOE NV110WTM-N61")
Signed-off-by: NDouglas Anderson <dianders@chromium.org>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201201125554.v2.1.I8a7bfc0966e803ab91001c9e6d01a736950c4981@changeid

drivers/gpu/drm/panel/panel-simple.c

@@ -1418,6 +1418,7 @@ static const struct drm_display_mode boe_nv110wtm_n61_modes[] = {
 		.vsync_start = 1440 + 3,
 		.vsync_end = 1440 + 3 + 6,
 		.vtotal = 1440 + 3 + 6 + 31,
+		.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
 	},
 	{
 		.clock = 138500,
@@ -1429,6 +1430,7 @@ static const struct drm_display_mode boe_nv110wtm_n61_modes[] = {
 		.vsync_start = 1440 + 3,
 		.vsync_end = 1440 + 3 + 6,
 		.vtotal = 1440 + 3 + 6 + 31,
+		.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
 	},
 };