ARM: OMAP3: mmc-twl4030 add cover switch

Allow a cover switch to be used to cause a rescan of the
MMC slot.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/mmc-twl4030.h b/arch/arm/mach-omap2/mmc-twl4030.h
index 21d3572..0aa1686 100644
--- a/arch/arm/mach-omap2/mmc-twl4030.h
+++ b/arch/arm/mach-omap2/mmc-twl4030.h
@@ -11,6 +11,7 @@
 	u8	wires;		/* 1/4/8 wires */
 	bool	transceiver;	/* MMC-2 option */
 	bool	ext_clock;	/* use external pin for input clock */
+	bool	cover_only;	/* No card detect - just cover switch */
 	int	gpio_cd;	/* or -EINVAL */
 	int	gpio_wp;	/* or -EINVAL */
 	struct device *dev;	/* returned: pointer to mmc adapter */