net: qcom/emac: fix semicolon.cocci warnings

drivers/net/ethernet/qualcomm/emac/emac-ethtool.c:155:49-50: Unneeded semicolon

 Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

CC: Timur Tabi <timur@codeaurora.org>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>