ACPICA: Update for output of the Debug Object

ACPICA commit b01414f5a822d0879aa9eba91541a21e7e501142

Improve output for the case of an Index() that refers to a
Package element that has not been initialized.

Link: https://github.com/acpica/acpica/commit/b01414f5


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>