usb: musb: split davinci to its own platform_driver

Just adding its own platform_driver, not really
using it yet.

When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.

Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/arch/arm/mach-davinci/usb.c b/arch/arm/mach-davinci/usb.c
index 0c7735b..803dbac 100644
--- a/arch/arm/mach-davinci/usb.c
+++ b/arch/arm/mach-davinci/usb.c
@@ -76,7 +76,7 @@
 static u64 usb_dmamask = DMA_BIT_MASK(32);
 
 static struct platform_device usb_dev = {
-	.name           = "musb-hdrc",
+	.name           = "musb-davinci",
 	.id             = -1,
 	.dev = {
 		.platform_data		= &usb_data,