ACPICA: aclocal: Put parens around some definitions.

ACPICA commit 7100a109f7d6523330d29f4d088cf1ffb756025f

Looking at where these are used, this shouldn't result in any behavioral changes, but it's best practices to have them.

Link: https://github.com/acpica/acpica/commit/7100a109


Signed-off-by: waddlesplash <waddlesplash@gmail.com>
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>