PM / TPM: Drop unused pm_message_t argument from tpm_pm_suspend()

The tpm_pm_suspend()'s second argument of type pm_message_t is not
used, so remove it.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index b1c5280..917f727 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -299,7 +299,7 @@
 			 loff_t *);
 extern ssize_t tpm_read(struct file *, char __user *, size_t, loff_t *);
 extern void tpm_remove_hardware(struct device *);
-extern int tpm_pm_suspend(struct device *, pm_message_t);
+extern int tpm_pm_suspend(struct device *);
 extern int tpm_pm_resume(struct device *);
 extern int wait_for_tpm_stat(struct tpm_chip *, u8, unsigned long,
 			     wait_queue_head_t *);