thinkpad_acpi: Drop pm_message_t arguments from suspend routines

Multiple suspend routines in drivers/platform/x86/thinkpad_acpi.c
use take pm_message_t arguments that aren't used by any of them.
Make those routines take no arguments as that's what they should do.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: Matthew Garrett <mjg@redhat.com>
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 8b5610d..070e555 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -277,7 +277,7 @@
 	int (*write) (char *);
 	void (*exit) (void);
 	void (*resume) (void);
-	void (*suspend) (pm_message_t state);
+	void (*suspend) (void);
 	void (*shutdown) (void);
 
 	struct list_head all_drivers;
@@ -931,7 +931,7 @@
 				 &tpacpi_all_drivers,
 				 all_drivers) {
 		if (ibm->suspend)
-			(ibm->suspend)(state);
+			(ibm->suspend)();
 	}
 
 	return 0;
@@ -3758,7 +3758,7 @@
 	}
 }
 
-static void hotkey_suspend(pm_message_t state)
+static void hotkey_suspend(void)
 {
 	/* Do these on suspend, we get the events on early resume! */
 	hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
@@ -6329,7 +6329,7 @@
 	return 0;
 }
 
-static void brightness_suspend(pm_message_t state)
+static void brightness_suspend(void)
 {
 	tpacpi_brightness_checkpoint_nvram();
 }
@@ -6748,7 +6748,7 @@
 	.get = volume_alsa_mute_get,
 };
 
-static void volume_suspend(pm_message_t state)
+static void volume_suspend(void)
 {
 	tpacpi_volume_checkpoint_nvram();
 }
@@ -8107,7 +8107,7 @@
 	flush_workqueue(tpacpi_wq);
 }
 
-static void fan_suspend(pm_message_t state)
+static void fan_suspend(void)
 {
 	int rc;