sunxi: usb: Rename the usbc.? files to usb_phy.?

The usbc.? files now only contain usb-phy related code, rename them to make
this clear.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/drivers/usb/musb-new/musb_uboot.c b/drivers/usb/musb-new/musb_uboot.c
index 4d0213a5..d1ee5f8 100644
--- a/drivers/usb/musb-new/musb_uboot.c
+++ b/drivers/usb/musb-new/musb_uboot.c
@@ -1,7 +1,7 @@
 #include <common.h>
 #include <watchdog.h>
 #ifdef CONFIG_ARCH_SUNXI
-#include <asm/arch/usbc.h>
+#include <asm/arch/usb_phy.h>
 #endif
 #include <asm/errno.h>
 #include <linux/usb/ch9.h>