net: fec: replace snprintf() with strlcpy() in fec_ptp_init()

No need to use snprintf() on a constant string, nor using magic
constant in the fixed code was a good idea.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/freescale/fec_ptp.c

@@ -570,7 +570,7 @@ void fec_ptp_init(struct platform_device *pdev, int irq_idx)
 	int ret;
 
 	fep->ptp_caps.owner = THIS_MODULE;
-	snprintf(fep->ptp_caps.name, 16, "fec ptp");
+	strlcpy(fep->ptp_caps.name, "fec ptp", sizeof(fep->ptp_caps.name));
 
 	fep->ptp_caps.max_adj = 250000000;
 	fep->ptp_caps.n_alarm = 0;