Using HTTPS breaks the download on Debian Wheezy. The switch was an
unintended side effect of the backport from LEDE.

Also, fix the commit message of the backport patch (mwlwifi is not updated
anymore since the last OpenWrt base upgrade).

Fixes #919

In addition, the temperature compensation support patch is reverted.

It seems that newer mac80211 version are less stable, so we downgrade it
for now.

Also switch to kmod-ath10k-ct, so we can drop our AP+IBSS patch.