KVM: x86: manually unroll bad_mt_xwr loop
KVM: x86: manually unroll bad_mt_xwr loop

The loop is computing one of two constants, it can be simpler to write
everything inline.

Signed-off-by: Paolo Bonzini <69d3ebcf5ee4e7f05a50dc23cd96655b730804b4@redhat.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs