repo/linux/rafael-pm: add acpi-bus branch as base candidate

the patchset in the link is based on this branch

Link: https://lore.kernel.org/all/20231006173055.2938160-1-michal.wilczynski@intel.com/
Signed-off-by: Yujie Liu <yujie.liu@intel.com>
Signed-off-by: Philip Li <philip.li@intel.com>

repo/linux/rafael-pm

@@ -1,5 +1,7 @@
 url: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
-integration_testing_branches: linux-next
+integration_testing_branches:
+- linux-next
+- acpi-bus
 mail_cc:
 - linux-acpi@vger.kernel.org
 - devel@acpica.org