ath9k: fix handling of the default chip pci id on ar93xx (#14886)

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39432 3c298f89-4303-0410-b956-a3cf2f4a3e73
odhcp6c: several bugfixes and improvements

* Fixed broken stateless-mode (fixes #14863)
* Support for multiple IAIDs, improved server compatibility,
  improved NTP/SNTP support and other fixes (thanks to T-Labs)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39433 3c298f89-4303-0410-b956-a3cf2f4a3e73
busybox: fix dependency on librpc (#14636)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39434 3c298f89-4303-0410-b956-a3cf2f4a3e73
busybox: add a reworked implementation of menuconfig support, this time with a guard option that keeps all symbols at default values until an extra option is activated

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39435 3c298f89-4303-0410-b956-a3cf2f4a3e73
wifi: Introduce 802.11ac support

This patch introduces 802.11ac support to base-files, mac80211 and hostapd. The
split of VHT160 in two 80 MHz bands is not yet supported, since it requires an
additional user supplied parameter for the channel of the second band.

Signed-off-by: Matti Laakso <malaakso@elisanet.fi>
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
[sven@open-mesh.com: Rebased patch, merged htmode and vhtmode,
removed special hwmode, fixed hostapd integration]
Signed-off-by: Sven Eckelmann <sven@open-mesh.com>