Merge branch 'siginfo-next' of...

Merge branch 'siginfo-next' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace into aarch64/for-next/core

Pull in pending siginfo changes from Eric Biederman as we depend on
the definition of FPE_FLTUNK for cleaning up our floating-point exception
signal delivery (which is currently broken and using FPE_FIXME).