acpi,mm: fix typo sibiling -> sibling

acpi,mm: fix typo sibiling -> sibling

First found this typo as reviewing memory tier code. Fix it by sed like:
$ sed -i 's/sibiling/sibling/g' $(git grep -l sibiling)

so the acpi one will be corrected as well.

Link: https://lkml.kernel.org/r/20230802092856.819328-1-lizhijian@cn.fujitsu.com
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Huang, Ying <ying.huang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>