target/i386: Pass host pointer and size to cpu_x86_{fsave,frstor}

We have already validated the memory region in the course of
validating the signal frame.  No need to do it again within
the helper function.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
3 files changed