Fold it into drop_fpu(). Phew, one less FPU function to pay attention
to.

No functionality change.
Signed-off-by: NBorislav Petkov <bp@suse.de>
Acked-by: NOleg Nesterov <oleg@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pekka Riikonen <priikone@iki.fi>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Suresh Siddha <sbsiddha@gmail.com>
Signed-off-by: NIngo Molnar <mingo@kernel.org>