musb: sunxi: Use simple way to fill musb_hdrc pdata

Filling musb_hdrc pdata using structure will unnecessary
add extra ifdefs, so fill them inside probe call for
better code understanding and get rid ifdefs using
devicetree compatible.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Jun Nie <jun.nie@linaro.org>