kernel/modules: add xen-privcmd package

Also select that for kmod-xen-fs. Fixes the following build
error:

  Package kmod-xen-fs is missing dependencies for the following libraries:
  xen-privcmd.ko

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 39430

package/kernel/linux/modules/virtual.mk

@@ -54,10 +54,27 @@ endef
 
 $(eval $(call KernelPackage,virtio-random))
 
+
+define KernelPackage/xen-privcmd
+  SUBMENU:=$(VIRTUAL_MENU)
+  TITLE:=Xen private commands
+  DEPENDS:=@TARGET_x86_xen_domu
+  KCONFIG:=CONFIG_XEN_PRIVCMD
+  FILES:=$(LINUX_DIR)/drivers/xen/xen-privcmd.ko
+  AUTOLOAD:=$(call AutoLoad,04,xen-privcmd)
+endef
+
+define KernelPackage/xen-privcmd/description
+ Kernel module for Xen private commands
+endef
+
+$(eval $(call KernelPackage,xen-privcmd))
+
+
 define KernelPackage/xen-fs
   SUBMENU:=$(VIRTUAL_MENU)
   TITLE:=Xen filesystem
-  DEPENDS:=@TARGET_x86_xen_domu
+  DEPENDS:=@TARGET_x86_xen_domu +kmod-xen-privcmd
   KCONFIG:= \
   	CONFIG_XENFS \
   	CONFIG_XEN_COMPAT_XENFS=y