x86/pkru: Remove useless include

x86/pkru: Remove useless include

BugLink: https://bugs.launchpad.net/bugs/1967750
PKRU code does not need anything from FPU headers. Include cpufeature.h
instead and fixup the resulting fallout in perf.

This is a preparation for FPU changes in order to prevent recursive include
hell.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211015011538.551522694@linutronix.de
(cherry picked from commit b50854eca0e014c2d3738073b387ab8ec85118ab)
Acked-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>