octeontx2-pf: Remove unneeded semicolon

Fixes coccicheck warning:

drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h:312:2-3: Unneeded semicolon

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zheng Bin <zhengbin13@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>