musb: sunxi: Add support for H3/H5/A64

Like other Allwinner SoC, the H3/H5/A64 is missing the config register
from the musb hardware block. Use a known working value for it
like other SoC.

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