x86: kvm: disable squashfs and jffs2 images by default

SVN-Revision: 38355

target/linux/x86/kvm_guest/target.mk

@@ -1,2 +1,3 @@
 BOARDNAME:=KVM Guest
+FEATURES:=ext4 pci usb
 DEFAULT_PACKAGES += kmod-virtio-balloon kmod-virtio-net kmod-virtio-random