HID: usbhid: remove #ifdef CONFIG_PM

Through the usage of pm_ptr() the CONFIG_PM-dependent code will always be
compiled, protecting against bitrot.
The linker will then garbage-collect the unused function avoiding any overhead.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20231012-hid-pm_ptr-v1-2-0a71531ca93b@weissschuh.net
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>

Author: t-8ch

drivers/hid/usbhid/hid-core.c

@@ -1562,7 +1562,6 @@ static int hid_post_reset(struct usb_interface *intf)
 	return 0;
 }
 
-#ifdef CONFIG_PM
 static int hid_resume_common(struct hid_device *hid, bool driver_suspended)
 {
 	int status = 0;
@@ -1654,8 +1653,6 @@ static int hid_reset_resume(struct usb_interface *intf)
 	return status;
 }
 
-#endif /* CONFIG_PM */
-
 static const struct usb_device_id hid_usb_ids[] = {
 	{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
 		.bInterfaceClass = USB_INTERFACE_CLASS_HID },
@@ -1668,11 +1665,9 @@ static struct usb_driver hid_driver = {
 	.name =		"usbhid",
 	.probe =	usbhid_probe,
 	.disconnect =	usbhid_disconnect,
-#ifdef CONFIG_PM
-	.suspend =	hid_suspend,
-	.resume =	hid_resume,
-	.reset_resume =	hid_reset_resume,
-#endif
+	.suspend =	pm_ptr(hid_suspend),
+	.resume =	pm_ptr(hid_resume),
+	.reset_resume =	pm_ptr(hid_reset_resume),
 	.pre_reset =	hid_pre_reset,
 	.post_reset =	hid_post_reset,
 	.id_table =	hid_usb_ids,