Since CONFIG_USB_GADGET_PXA27X and other macros are renamed to
CONFIG_USB_PXA27X. Update them in arch/arm/mach-pxa and arch/arm/configs
to keep consistent.

Cc: stable@kernel.org
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>