linux-yocto-rt: Add paravirt_kvm support for qemux86-64

This feature includes paravirtualized KVM guest support, including
KVMCLOCK for enhancing clock accuracy of guest OS.

(From OE-Core rev: 2b2238e5e81748475de8a339c33529484971b0ff)

Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Hongzhi.Song <hongzhi.song@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/linux/linux-yocto-rt_4.14.bb

@@ -38,4 +38,4 @@ KERNEL_EXTRA_FEATURES ?= "features/netfilter/netfilter.scc features/taskstats/ta
 KERNEL_FEATURES_append = " ${KERNEL_EXTRA_FEATURES}"
 KERNEL_FEATURES_append_qemuall=" cfg/virtio.scc"
 KERNEL_FEATURES_append_qemux86=" cfg/sound.scc cfg/paravirt_kvm.scc"
-KERNEL_FEATURES_append_qemux86-64=" cfg/sound.scc"
+KERNEL_FEATURES_append_qemux86-64=" cfg/sound.scc cfg/paravirt_kvm.scc"

meta/recipes-kernel/linux/linux-yocto-rt_4.18.bb

@@ -40,4 +40,4 @@ KERNEL_EXTRA_FEATURES ?= "features/netfilter/netfilter.scc features/taskstats/ta
 KERNEL_FEATURES_append = " ${KERNEL_EXTRA_FEATURES}"
 KERNEL_FEATURES_append_qemuall=" cfg/virtio.scc"
 KERNEL_FEATURES_append_qemux86=" cfg/sound.scc cfg/paravirt_kvm.scc"
-KERNEL_FEATURES_append_qemux86-64=" cfg/sound.scc"
+KERNEL_FEATURES_append_qemux86-64=" cfg/sound.scc cfg/paravirt_kvm.scc"