gpio: Add custom driver for Axxia SoCs

commit 55ea8472 from
https://github.com/axxia/linux-yocto.git

 v5.10/standard/axxia-dev/base.

Some of the Axxia SoCs have a different interrupt structure
than the standard PL061 driver. This commit adds a driver
based on the PL061 driver but with the Axxia interrupt structure.

Signed-off-by: John Jacques <john.jacques@intel.com>
Signed-off-by: Charlie Paul <charlie.paul@windriver.com>
Signed-off-by: Daniel Dragomir <daniel.dragomir@windriver.com>
Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>
Signed-off-by: Liwei Song <liwei.song@windriver.com>