use nfsv3 and tcp as default

target/linux/patches/3.14.4/nfsv3-tcp.patch

@@ -0,0 +1,12 @@
+diff -Nur linux-3.13.11.orig/fs/nfs/nfsroot.c linux-3.13.11/fs/nfs/nfsroot.c
+--- linux-3.13.11.orig/fs/nfs/nfsroot.c	2014-04-23 01:49:33.000000000 +0200
++++ linux-3.13.11/fs/nfs/nfsroot.c	2014-05-13 16:09:25.000000000 +0200
+@@ -87,7 +87,7 @@
+ #define NFS_ROOT		"/tftpboot/%s"
+ 
+ /* Default NFSROOT mount options. */
+-#define NFS_DEF_OPTIONS		"vers=2,udp,rsize=4096,wsize=4096"
++#define NFS_DEF_OPTIONS		"nfsvers=3,proto=tcp,rsize=4096,wsize=4096"
+ 
+ /* Parameters passed from the kernel command line */
+ static char nfs_root_parms[256] __initdata = "";