compat-wireless: merge a pending reg fix onto linux-next-pending/

compat-wireless: merge a pending reg fix onto linux-next-pending/

This merge this patch onto linux-next-pending/

commit ebd0fd2b1a30aa836c28e758d8a57ecdfa85052f
Author: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Date:   Wed Jul 18 18:11:29 2012 +0530

    cfg80211: Fix mutex locking in reg_last_request_cell_base

    should fix the following issue

        [ 3229.815012] [ BUG: lock held when returning to user space! ]
        [ 3229.815016] 3.5.0-rc7-wl #28 Tainted: G        W  O
        [ 3229.815017]
        ------------------------------------------------
        [ 3229.815019] wpa_supplicant/5783 is leaving the kernel with locks still held!
        [ 3229.815022] 1 lock held by wpa_supplicant/5783:
        [ 3229.815023]  #0: (reg_mutex){+.+.+.}, at: [<fa65834d>]
        reg_last_request_cell_base+0x1d/0x60 [cfg80211]

    Cc: Luis Rodriguez <mcgrof@gmail.com>
    Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
    Tested-by: Luciano Coelho <coelho@ti.com>
    Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@frijolero.org>