[][kernel][common][app][Add multiple QDMA TX queue scheduler support]

[Description]
Add multiple QDMA TX queue scheduler support.

If without this patch, mtkhant only configure two schedulers.

[Release-log]
N/A


Change-Id: Ib6173163a2a6e06305eb64b3948983995ebda0b8
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8203880
2 files changed