musb: sunxi: Add support for A83T

Like the Allwinner A33 SoC, the A83T is missing the config register
from the musb USB DRD hardware block. Use a known working value for
it.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/usb/musb-new/musb_regs.h

@@ -434,7 +434,7 @@ static inline u8 musb_read_ulpi_buscontrol(void __iomem *mbase)
 
 static inline u8 musb_read_configdata(void __iomem *mbase)
 {
-#ifdef CONFIG_MACH_SUN8I_A33
+#if defined CONFIG_MACH_SUN8I_A33 || defined CONFIG_MACH_SUN8I_A83T
 	/* <Sigh> allwinner saves a reg, and we need to hardcode this */
 	return 0xde;
 #else