ACPI / PM: Drop pm_message_t argument from device suspend callback

None of the drivers implementing the ACPI device suspend callback
uses the pm_message_t argument of it, so this argument may be dropped
entirely from that callback.  This will simplify switching the ACPI
bus type to PM handling based on struct dev_pm_ops.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/drivers/platform/x86/hp_accel.c b/drivers/platform/x86/hp_accel.c
index 22b2dfa..c9e0520 100644
--- a/drivers/platform/x86/hp_accel.c
+++ b/drivers/platform/x86/hp_accel.c
@@ -353,7 +353,7 @@
 
 
 #ifdef CONFIG_PM
-static int lis3lv02d_suspend(struct acpi_device *device, pm_message_t state)
+static int lis3lv02d_suspend(struct acpi_device *device)
 {
 	/* make sure the device is off when we suspend */
 	lis3lv02d_poweroff(&lis3_dev);