drm/xe/pxp: Handle the PXP termination interrupt

When something happen to the session, the HW generates a termination
interrupt. In reply to this, the driver is required to submit an inline
session termination via the VCS, trigger the global termination and
notify the GSC FW that the session is now invalid.

v2: rename ARB define to make it cleaner to move it to uapi (John)
v3: fix parameter name in documentation

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250129174140.948829-6-daniele.ceraolospurio@intel.com