Wireless speed regression on R7800 for 23.05.04

[egc]

For the record this is the commit: https://github.com/openwrt/openwrt/commit/56a84b3c4754f96a64a17bcc9730358ac48ba993

Thanks to @KONG, @vochong and especially @regae see: Ipq806x NSS build (Netgear R7800 / TP-Link C2600 / Linksys EA8500) - #4560 by KONG

See also: https://github.com/openwrt/openwrt/issues/15999