NFC: st21nfca: Add of_st21nfca_i2c_match to MODULE_DEVICE_TABLE

When CONFIG_OF is define add of_st21nfca_i2c_match to
MODULE_DEVICE_TABLE.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/nfc/st21nfca/i2c.c b/drivers/nfc/st21nfca/i2c.c
index ff6dacb..22bc8c2 100644
--- a/drivers/nfc/st21nfca/i2c.c
+++ b/drivers/nfc/st21nfca/i2c.c
@@ -687,10 +687,13 @@
 	return 0;
 }
 
+#ifdef CONFIG_OF
 static const struct of_device_id of_st21nfca_i2c_match[] = {
 	{ .compatible = "st,st21nfca_i2c", },
 	{}
 };
+MODULE_DEVICE_TABLE(of, of_st21nfca_i2c_match);
+#endif
 
 static struct i2c_driver st21nfca_hci_i2c_driver = {
 	.driver = {