x86/fpu: Replace KVMs xstate component clearing

x86/fpu: Replace KVMs xstate component clearing

BugLink: https://bugs.launchpad.net/bugs/1967750
In order to prepare for the support of dynamically enabled FPU features,
move the clearing of xstate components to the FPU core code.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: kvm@vger.kernel.org
Link: https://lkml.kernel.org/r/20211013145322.399567049@linutronix.de
(cherry picked from commit 087df48c298c1cb829f4cd468d90f93234b1bc44)
Acked-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>