ARM64: entry.S: Add Fault Handling for Axxia

commit  88d0d1791d4109aa20f4897737423ad8e7ca2d06 from
https://github.com/axxia/linux-yocto.git

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

The purpose is to handle SErrors (Asynchronous Aborts) caused by
sRIO optional register accesses, which are not supported by the
Axxia sRIO hardware. As it isn't possible to determine the cause
completely, a mechanism is provided to enable or disable masking
from user space.

Adding a fault handler allows enumerating the sRIO buss without
crashing.

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