unwind_user/x86: Fix arch=um build

Add CONFIG_HAVE_UNWIND_USER_FP guards to make sure this code
doesn't break arch=um builds.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Closes: https://lore.kernel.org/oe-kbuild-all/202510291919.FFGyU7nq-lkp@intel.com/
This commit is contained in:
Peter Zijlstra 2025-10-29 14:24:57 +01:00 • committed by Ingo Molnar
commit aa7387e79a