usb: musb: Change end point selection to use new IO access

This allows the endpoints to work when multiple MUSB glue
layers are built in.

Cc: Fabio Baltieri <fabio.baltieri@linaro.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 440333f..53bd0e7 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -633,6 +633,7 @@
 }
 
 static struct musb_platform_ops dsps_ops = {
+	.quirks		= MUSB_INDEXED_EP,
 	.init		= dsps_musb_init,
 	.exit		= dsps_musb_exit,