drm: panel-orientation-quirks: Do rotation quirk for new GPD Win2 FW

I just got a new GDP Win2 device with an updated firmware, which still
requires this quirk to get the rotation right, so add the new firmware
date to the quirk matching table.

This should go to drm-misc-next.

Signed-off-by: Gabriel Krisman Bertazi <[e-mail]>
Reviewed-by: Hans de Goede <[e-mail]>
Signed-off-by: Maarten Lankhorst <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/drm_panel_orientation_quirks.c

···
 	.width = 720,
 	.height = 1280,
 	.bios_dates = (const char * const []){
-		"12/07/2017", "05/24/2018", NULL },
+		"12/07/2017", "05/24/2018", "06/29/2018", NULL },
 	.orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
 };