omap: musb: introduce default board config

Most boards use exactly the same configuration for musb initialization.
Create a default that can be shared amount different boards.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/board-rm680.c b/arch/arm/mach-omap2/board-rm680.c
index 8e710ff..42d10b1 100644
--- a/arch/arm/mach-omap2/board-rm680.c
+++ b/arch/arm/mach-omap2/board-rm680.c
@@ -144,17 +144,11 @@
 };
 #endif
 
-static struct omap_musb_board_data rm680_musb_data = {
-	.interface_type	= MUSB_INTERFACE_ULPI,
-	.mode		= MUSB_PERIPHERAL,
-	.power		= 100,
-};
-
 static void __init rm680_init(void)
 {
 	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 	omap_serial_init();
-	usb_musb_init(&rm680_musb_data);
+	usb_musb_init(NULL);
 	rm680_peripherals_init();
 }