net: sparx5: fix a couple warning messages

The WARN_ON() macro takes a condition, not a warning message.

Fixes: 0933bd04047c ("net: sparx5: Add support for ptp clocks")
Signed-off-by: Dan Carpenter <[e-mail]>
Link: https://lore.kernel.org/r/20220314140327.GB30883@kili
Signed-off-by: Paolo Abeni <[e-mail]>

drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c

···
 		res =  920535763834;
 		break;
 	default:
-		WARN_ON("Invalid core clock");
+		WARN(1, "Invalid core clock");
 		break;
 	}
 
···
 		res = 0x0CC6666666666666;
 		break;
 	default:
-		WARN_ON("Invalid core clock");
+		WARN(1, "Invalid core clock");
 		break;
 	}