ACPICA commit ffef4ae9a1b6032ebadeab2c2b806f0e585f0006

Add support for SIGSEGV
Improve/cleanup SIGINT handling

Link: https://github.com/acpica/acpica/commit/ffef4ae9Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>