net: qcom/emac: fix a sizeof() typo

We had intended to say "sizeof(u32)" but the "u" is missing.
Fortunately, sizeof(32) is also 4, so the original code still works.

Fixes: c4e7beea ("net: qcom/emac: add ethtool support for reading hardware registers")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qualcomm/emac/emac-ethtool.c

@@ -227,7 +227,7 @@ static void emac_get_regs(struct net_device *netdev,
 
 static int emac_get_regs_len(struct net_device *netdev)
 {
-	return EMAC_MAX_REG_SIZE * sizeof(32);
+	return EMAC_MAX_REG_SIZE * sizeof(u32);
 }
 
 static const struct ethtool_ops emac_ethtool_ops = {