tpm: add tpm_auto_startup() into tpm-interface.c

Add wrapper tpm_auto_startup() to tpm-interface.c
instead of open coded decision between TPM 1.x and TPM 2.x
in tpm-chip.c

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

drivers/char/tpm/tpm-chip.c

@@ -451,14 +451,9 @@ int tpm_chip_register(struct tpm_chip *chip)
 {
 	int rc;
 
-	if (chip->ops->flags & TPM_OPS_AUTO_STARTUP) {
-		if (chip->flags & TPM_CHIP_FLAG_TPM2)
-			rc = tpm2_auto_startup(chip);
-		else
-			rc = tpm1_auto_startup(chip);
-		if (rc)
-			return rc;
-	}
+	rc = tpm_auto_startup(chip);
+	if (rc)
+		return rc;
 
 	tpm_sysfs_add_device(chip);