backports: adjust snd_portid patch for nl80211 update

backports: adjust snd_portid patch for nl80211 update

The new code for the "critical protocol indication" uses
snd_portid and must be adjusted in the backport patches.
This is required as of next-20130423.

commit 5de17984898c5758fc6ebe08eccea9f4b6548914
Author: Arend van Spriel <arend@broadcom.com>
Date:   Thu Apr 18 15:49:00 2013 +0200

    cfg80211: introduce critical protocol indication from user-space

    Some protocols need a more reliable connection to complete
    successful in reasonable time. This patch adds a user-space
    API to indicate the wireless driver that a critical protocol
    is about to commence and when it is done, using nl80211 primitives
    NL80211_CMD_CRIT_PROTOCOL_START and NL80211_CRIT_PROTOCOL_STOP.

    There can be only on critical protocol session started per
    registered cfg80211 device.

    The driver can support this by implementing the cfg80211 callbacks
    .crit_proto_start() and .crit_proto_stop(). Examples of protocols
    that can benefit from this are DHCP, EAPOL, APIPA. Exactly how the
    link can/should be made more reliable is up to the driver. Things
    to consider are avoid scanning, no multi-channel operations, and
    alter coexistence schemes.

    Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
    Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
    Signed-off-by: Arend van Spriel <arend@broadcom.com>
    Signed-off-by: Johannes Berg <johannes.berg@intel.com>
[mcgrof@do-not-panic.com]: Required as of next-20130423
 and provided commit log message that introduced this
 change.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>