net: hns3: change TM sched mode to TC-based mode when SRIOV enabled

TC-based sched mode supports SRIOV enabled and SRIOV disabled. This
patch change the TM sched mode to TC-based mode in initialization
process.

Fixes: cc9bb43a

 ("net: hns3: Add tc-based TM support for sriov enabled port")
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>