isdn: Fix typo in drivers/isdn

Correct spelling typo in printk within drivers/isdn

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/isdn/hisax/hfc_pci.c b/drivers/isdn/hisax/hfc_pci.c
index 334fa90..f60d4be 100644
--- a/drivers/isdn/hisax/hfc_pci.c
+++ b/drivers/isdn/hisax/hfc_pci.c
@@ -354,7 +354,7 @@
 		if ((rcnt > MAX_DFRAME_LEN + 3) || (rcnt < 4) ||
 		    (df->data[zp->z1])) {
 			if (cs->debug & L1_DEB_WARN)
-				debugl1(cs, "empty_fifo hfcpci paket inv. len %d or crc %d", rcnt, df->data[zp->z1]);
+				debugl1(cs, "empty_fifo hfcpci packet inv. len %d or crc %d", rcnt, df->data[zp->z1]);
 #ifdef ERROR_STATISTIC
 			cs->err_rx++;
 #endif