Some skb for vendor command reply is allocated with internal
API but reply/free is done with kernel APIs, which will break
the buffer tracking once NBUF_MEMORY_DEBUG and NETLINK_BUF_TRACK
are enabled.
To fix it, replace kernel APIs with internal APIs accordingly:
Replace cfg80211_vendor_cmd_reply() with
wlan_cfg80211_vendor_cmd_reply().
Replace kfree_skb() with wlan_cfg80211_vendor_free_skb().
Change-Id: If4f37b5dca5483a9b64c726d37d3959d3ecd699e
CRs-Fixed: 3350756
2294db2698