Update kernel from source rev b13410a9ea80736d4de252e6d5fa65e301377b2d

Adds seccomp-bpf support.

Source repo: https://github.com/mozilla-b2g/codeaurora_kernel_msm

Rebuilding notes:
* Use the arm-eabi toolchain, not the arm-linux-androideabi one.
* Build the zImage-dtb make target, not the default target.
Merge pull request #1 from jld/secure-hammerhead

Bug 1010009 -  Enable seccomp-bpf support on Nexus 5. r=mwu