[maverick] ARM security cherry-picks

[Kees Cook]

Hi! I'm not sure the best process for this, but could you cherry-pick the
following from Linus's tree:

c743f38013aeff58ef6252601e397b5ba281c633
df0698be14c6683606d5df2d83e3ae40f85ed0d9

990cb8acf23cab19a2930f1ed5e7dc108f89079b
cc92c28b2db5b406657ecc05235d4ca4e222ae34

And one that should be upstream soon:

http://git.linaro.org/gitweb?p=linux/arm_next.git;a=commitdiff;h=f13b5666dfe3240bf2218f0ca30e5ea2b4a1c50d

These are for both "linux" and "linux-ti-omap4", since it's for ARM, and
it's what will be in Linaro.

Thanks!

-Kees

-- 
Kees Cook
Ubuntu Security Team