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.