net/ice/base: fix type-mismatch

net/ice/base: fix type-mismatch

The iterators are u8, but the values being compared against are u16s.
It may not ever be the case that the comparison is against a value
larger than the upper bound of the smaller type, but code analysis tools
don't know that.

Fixes: 93e84b1bfc92 ("net/ice/base: add basic Tx scheduler")
Cc: stable@dpdk.org
Signed-off-by: Jeb Cramer <jeb.j.cramer@intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Xiaolong Ye <xiaolong.ye@intel.com>