e1000: add CONFIG_E1000_NAPI=y for older kernels

SVN-Revision: 18416

package/kernel/modules/netdevices.mk

@@ -203,7 +203,8 @@ define KernelPackage/e1000
   TITLE:=Intel(R) PRO/1000 PCI cards kernel support
   DEPENDS:=@PCI_SUPPORT
   KCONFIG:=CONFIG_E1000 \
-    CONFIG_E1000_DISABLE_PACKET_SPLIT=n
+    CONFIG_E1000_DISABLE_PACKET_SPLIT=n \
+    CONFIG_E1000_NAPI=y
   FILES:=$(LINUX_DIR)/drivers/net/e1000/e1000.$(LINUX_KMOD_SUFFIX)
   AUTOLOAD:=$(call AutoLoad,50,e1000)
 endef