drm/panel: samsung-s6d7aa0: drop DRM_BUS_FLAG_DE_HIGH for lsl080al02

It turns out that I had misconfigured the device I was using the panel
with; the bus data polarity is not high for this panel, I had to change
the config on the display controller's side.

Fix the panel config to properly reflect its accurate settings.

Fixes: 6810bb390282 ("drm/panel: Add Samsung S6D7AA0 panel controller driver")
Reviewed-by: Jessica Zhang <[e-mail]>
Signed-off-by: Artur Weber <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Neil Armstrong <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c

···
 	.off_func = s6d7aa0_lsl080al02_off,
 	.drm_mode = &s6d7aa0_lsl080al02_mode,
 	.mode_flags = MIPI_DSI_MODE_VSYNC_FLUSH | MIPI_DSI_MODE_VIDEO_NO_HFP,
-	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
+	.bus_flags = 0,
 
 	.has_backlight = false,
 	.use_passwd3 = false,