powerpc/configs: Add KVM guest defconfig

This patch adds new defconfig options for powerpc KVM guest
and guest.config with additional config symbols enabled,
which is to build kernel to boot without initramfs and can be used
as place holder for guest specific additional config symbols in future.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/Makefile

@@ -317,6 +317,14 @@ PHONY += ppc64le_defconfig
 ppc64le_defconfig:
 	$(call merge_into_defconfig,ppc64_defconfig,le)
 
+PHONY += ppc64le_guest_defconfig
+ppc64le_guest_defconfig:
+	$(call merge_into_defconfig,ppc64_defconfig,le guest)
+
+PHONY += ppc64_guest_defconfig
+ppc64_guest_defconfig:
+	$(call merge_into_defconfig,ppc64_defconfig,be guest)
+
 PHONY += powernv_be_defconfig
 powernv_be_defconfig:
 	$(call merge_into_defconfig,powernv_defconfig,be)

arch/powerpc/configs/guest.config

+CONFIG_VIRTIO_BLK=y
+CONFIG_VIRTIO_BLK_SCSI=y
+CONFIG_SCSI_VIRTIO=y
+CONFIG_VIRTIO_NET=y
+CONFIG_NET_FAILOVER=y
+CONFIG_VIRTIO_CONSOLE=y
+CONFIG_VIRTIO=y
+CONFIG_VIRTIO_PCI=y
+CONFIG_KVM_GUEST=y
+CONFIG_EPAPR_PARAVIRT=y
+CONFIG_VIRTIO_BALLOON=y
+CONFIG_VHOST_NET=y
+CONFIG_VHOST=y