llvmpipe: Set "+64bit" for X86_64
What does this MR do and why?
llvmpipe: Set "+64bit" for X86_64
Without this, on some "buggy" qemu cpu setup, LLVM could crash
if LLVM detects the wrong CPU type.
Fixes: f92cadccc65 ("llvmpipe: Always using util_get_cpu_caps to get cpu caps for llvm on x86")
Signed-off-by: Lepton Wu <lepton@chromium.org>