lxfb: set the H- and V-SYNC polarity of the flatpanel output

Fixup for the flatpanel output.  The geode_modedb attribute flags are used
to set the SYNC polarity of the flatpanel.  Without this patch our
flatpanel registers stayed unconfigured, so we just saw garbage output.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Cc: Andres Salomon <dilinger@collabora.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/geode/lxfb.h b/drivers/video/geode/lxfb.h
index cc781c0..e4c4d89 100644
--- a/drivers/video/geode/lxfb.h
+++ b/drivers/video/geode/lxfb.h
@@ -365,6 +365,8 @@
 	FP_CRC, /* 0x458 */
 };
 
+#define FP_PT2_HSP			(1 << 22)
+#define FP_PT2_VSP			(1 << 23)
 #define FP_PT2_SCRC			(1 << 27)	/* shfclk free */
 
 #define FP_PM_P				(1 << 24)	/* panel power ctl */