net: core: Support UID-based routing.

This contains the following commits:

1. 0149763 net: core: Add a UID range to fib rules.
2. 1650474 net: core: Use the socket UID in routing lookups.
3. 0b16771 net: ipv4: Add the UID to the route cache.
4. ee058f1 net: core: Add a RTA_UID attribute to routes.
    This is so that userspace can do per-UID route lookups.

Bug: 15413527
Change-Id: I1285474c6734614d3bda6f61d88dfe89a4af7892
Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Git-commit: 0b428749ce5969bc06c73855e360141b4e7126e8
Git-repo: https://android.googlesource.com/kernel/common.git
Signed-off-by: Ian Maund <imaund@codeaurora.org>
Handle 'sk' being NULL in UID-based routing.

Bug: 15413527
Change-Id: If33bebb7b52c0ebfa8dac2452607bce0c2b0faa0
Signed-off-by: Sreeram Ramachandran <sreeram@google.com>
sec_misc: Fix snprintf length usage

Change-Id: I5179e9a27774a556df458d4d3c5d1c280da5c9b0
msm: bam_dmux: Fix snprintf length usage

Change-Id: I8dd313a30cfb31de2c5da669a131abcbbe4dc649
sec_param: Fix snprintf length usage

Change-Id: I945868a3eda121e003888fa25cbb859edd38ef10
sensorhub: barcode_emul_tmg3992: Fix snprintf length usage

Change-Id: Ib580b45d7cb29994536d88d25d48efe03d2f8c6e
msm: mdss: mdss_samsung_oled_cmd_hd_wqhd_panel: Fix snprintf length usage

Change-Id: Ic0287779d62544f65e7ee29b07632d7759e3ef09