Bump NETFRONT_ACCEL_VERSION due to API changes

diff -r 2bd7ab3f304b drivers/xen/netfront/netfront.h
--- a/drivers/xen/netfront/netfront.h	Fri Oct 26 14:25:45 2007 +0100
+++ b/drivers/xen/netfront/netfront.h	Fri Oct 26 14:26:44 2007 +0100
@@ -102,7 +102,7 @@ struct netfront_accel_hooks {
 
 /* Version of API/protocol for communication between netfront and
    acceleration plugin supported */
-#define NETFRONT_ACCEL_VERSION 0x00010001
+#define NETFRONT_ACCEL_VERSION 0x00010002
 
 /* 
  * Per-netfront device state for the accelerator.  This is used to