netfilter: add xt_qtaguid matching module

This module allows tracking stats at the socket level for given UIDs.
It replaces xt_owner.
If the --uid-owner is not specified, it will just count stats based on
who the skb belongs to. This will even happen on incoming skbs as it
looks into the skb via xt_socket magic to see who owns it.
If an skb is lost, it will be assigned to uid=0.

To control what sockets of what UIDs are tagged by what, one uses:
  echo t $sock_fd $accounting_tag $the_billed_uid \
     > /proc/net/xt_qtaguid/ctrl
 So whenever an skb belongs to a sock_fd, it will be accounted against
   $the_billed_uid
  and matching stats will show up under the uid with the given
   $accounting_tag.

Because the number of allocations for the stats structs is not that big:
  ~500 apps * 32 per app
we'll just do it atomic. This avoids walking lists many times, and
the fancy worker thread handling. Slabs will grow when needed later.

It use netdevice and inetaddr notifications instead of hooks in the core dev
code to track when a device comes and goes. This removes the need for
exposed iface_stat.h.

Put procfs dirs in /proc/net/xt_qtaguid/
  ctrl
  stats
  iface_stat/<iface>/...
The uid stats are obtainable in ./stats.

Change-Id: I01af4fd91c8de651668d3decb76d9bdc1e343919
Signed-off-by: JP Abgrall <jpa@google.com>
netfilter: adding the original quota2 from xtables-addons

(Backport from common 3.0: Change I19d49858)

The original xt_quota in the kernel is plain broken:
  - counts quota at a per CPU level
    (was written back when ubiquitous SMP was just a dream)
  - provides no way to count across IPV4/IPV6.

This patch is the original unaltered code from:
  http://sourceforge.net/projects/xtables-addons

  at commit e84391ce665cef046967f796dd91026851d6bbf3

Change-Id: I19d49858840effee9ecf6cff03c23b45a97efdeb
Signed-off-by: JP Abgrall <jpa@google.com>
netfitler: fixup the quota2, and enable.

(Backport from common 3.0: Change I021d3b74)

The xt_quota2 came from
  http://sourceforge.net/projects/xtables-addons/develop

It needed tweaking for it to compile within the kernel tree.
Fixed kmalloc() and create_proc_entry() invocations within
 a non-interruptible context.
Removed useless copying of current quota back to the iptable's
struct matchinfo:
  - those are per CPU: they will change randomly based on which
    cpu gets to update the value.
  - they prevent matching a rule: e.g.
      -A chain -m quota2 --name q1 --quota 123
     can't be followed by
      -D chain -m quota2 --name q1 --quota 123
    as the 123 will be compared to the struct matchinfo's quota member.

Change-Id: I021d3b743db3b22158cc49acb5c94d905b501492
Signed-off-by: JP Abgrall <jpa@google.com>
bring in jelly bean changes
update net config, fix data usage reboot
fix incoming call backlight bug
add trebon support (untested)
remove useless defconfig, disable SWAP support
add 1000Mhz to frequency table
update local version

This is needed so the AR6000 driver can be loaded
add HW v-sync support

kanged from KonstaT (thanks!)
Patch ondemand governour for bootpulse support
backport USB Gadget from kernel 3.x
update, move and enable ZRAM
attempt to fix Bluetooth tehering
remove unused defconfigs
clean-up USB config in board file
trebon: update defconfig and fix USB
clean up USB config in trebon board file
fix incoming call backlight for trebon