arm: socfpga: Enable DWAPB GPIO driver

Enable the DWAPB GPIO driver for SoCFPGA Cyclone V and Arria V.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>