configure: emit HOST=$host to config.mak

This is useful information for the run scripts to know, especially if
they want to drop to using TCG.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-Id: <1446769483-21586-8-git-send-email-drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 file changed