ACPICA: Add new flags to HEST subtables

ACPICA commit c2c3807adb8a67e6462b731dc64be35d8b8317f8

Add GHES_ASSIST flag for ACPI 6.2
Add missing GLOBAL flag for AER structures

Link: https://github.com/acpica/acpica/commit/c2c3807a


Signed-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>