tpm: fix format string error in tpm-chip.c

dev_set_name() takes three arguments where the second argument is
a format string. This patch fixes the call accordingly in tpm-chip.c

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 313d21e ("tpm: device class for tpm")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>

drivers/char/tpm/tpm-chip.c

@@ -125,7 +125,7 @@ struct tpm_chip *tpmm_chip_alloc(struct device *dev,
 	else
 		chip->dev.devt = MKDEV(MAJOR(tpm_devt), chip->dev_num);
 
-	dev_set_name(&chip->dev, chip->devname);
+	dev_set_name(&chip->dev, "%s", chip->devname);
 
 	device_initialize(&chip->dev);