Merge: PCI: pciehp: Retain Power Indicator bits for userspace indicators

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/4837

```
JIRA: https://issues.redhat.com/browse/RHEL-41181
Upstream Status: Currently in the 'for-linus' topic branch of
  https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git
slated for next "fixes" rc.

This fixes an unintentional upstream regression introduced by
commit abaaac4 ("PCI: hotplug: Use FIELD_GET/PREP()").

Signed-off-by: Myron Stowe <mstowe@redhat.com>
```

Approved-by: David Arcari <darcari@redhat.com>
Approved-by: John W. Linville <linville@redhat.com>
Approved-by: Lenny Szubowicz <lszubowi@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Scott Weaver <scweaver@redhat.com>

Author: swvrrh

drivers/pci/hotplug/pciehp_hpc.c

@@ -485,7 +485,9 @@ int pciehp_set_raw_indicator_status(struct hotplug_slot *hotplug_slot,
 	struct pci_dev *pdev = ctrl_dev(ctrl);
 
 	pci_config_pm_runtime_get(pdev);
-	pcie_write_cmd_nowait(ctrl, FIELD_PREP(PCI_EXP_SLTCTL_AIC, status),
+
+	/* Attention and Power Indicator Control bits are supported */
+	pcie_write_cmd_nowait(ctrl, FIELD_PREP(PCI_EXP_SLTCTL_AIC | PCI_EXP_SLTCTL_PIC, status),
 			      PCI_EXP_SLTCTL_AIC | PCI_EXP_SLTCTL_PIC);
 	pci_config_pm_runtime_put(pdev);
 	return 0;