wireless backport from 3.4

Courtesy of Brian Beloshapka (bbelos)

Change-Id: I4b0a8d591bfe57c9f69943ecaf2fa80e772fde8e
WIFI: Use kernel version 3.4 ifdef's.

Change-Id: I7f8414839e2205dff8939cab6739789633e31204
Disabled the CONFIG_J4FS it's not used, and not needed any more.