[][Enable WDMA Rx ring full drop for Panther]

[Description]
Add configurations to enable WDMA Rx ring full drop for
solving Panther AX7800/AX8400 5G(MT7915) WA CPU bound issue.

If without this patch, system might run into WiFi Tx/Rx
deadlock issue or WiFi Tx small packet low throughput issue.

[Release-log]
N/A

Change-Id: I57cd4a8e3ae19bdcb34d7d042989b7c1327ea08e
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6193220
2 files changed