ACPI fixes for v4.7-rc7

 - Fix a lock ordering issue in ACPICA introduced by a recent commit
   that attempted to fix a deadlock in the dynamic table loading code
   which in turn appeared after changes related to the handling of
   module-level AML also made in this cycle (Lv Zheng).

 - Fix a recent regression in the ACPI IRQ management code that may
   cause PCI drivers to be unable to register an IRQ if that IRQ
   happens to be shared with a device on the ISA bus, like the
   parallel port, by reverting one commit entirely and restoring the
   previous behavior in two other places (Sinan Kaya).

 - Fix a recent regression in the ACPI AML debugger introduced by
   the commit that removed incorrect usage of IS_ERR_VALUE() from
   multiple places (Lv Zheng).
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