ACPICA commit e068948f49eb61a78c211028976a174604c5644a

Fix some issues in the exutils.c file.

Link: https://github.com/acpica/acpica/commit/e068948fSigned-off-by: NBob Moore <robert.moore@intel.com>
Signed-off-by: NLv Zheng <lv.zheng@intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>