ARM:OMAP2: Add OVERO_GPIO_BT_XGATE to Overo board init

Drive OVERO_GPIO_BT_XGATE low rather than relying on the pin mux pull
down set by U-boot
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-overo.c

@@ -229,6 +229,12 @@ static void __init overo_init(void)
 					"OVERO_GPIO_W2W_NRESET\n");
 	}
 
+	if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
+	    (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
+		gpio_export(OVERO_GPIO_BT_XGATE, 0);
+	else
+		printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
+
 	if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
 	    (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
 		gpio_export(OVERO_GPIO_BT_NRESET, 0);

arch/arm/plat-omap/include/mach/board-overo.h

@@ -16,6 +16,7 @@
 #ifndef __ASM_ARCH_OVERO_H
 #define __ASM_ARCH_OVERO_H
 
+#define OVERO_GPIO_BT_XGATE	15
 #define OVERO_GPIO_W2W_NRESET	16
 #define OVERO_GPIO_BT_NRESET	164
 #define OVERO_GPIO_USBH_CPEN	168