linux-yocto-dev: Add paravirt_kvm support for qemux86-64
This feature includes paravirtualized KVM guest support, including
KVMCLOCK for enhancing clock accuracy of guest OS. With it we can prevent
the following error.
"clocksource: timekeeping watchdog on CPU3: Marking clocksource 'tsc' as
unstable because the skew is too large"
Signed-off-by: He Zhe <zhe.he@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
