mediatek: bump to v4.14

This drops support for all the !emmc EVB and adds banannaPi-R2
Also drop mtkhnat until the nftables offoad driver is ready

Signed-off-by: John Crispin <john@phrozen.org>

target/linux/mediatek/patches-4.14/0012-clk-dont-disable-unused-clocks.patch

@@ -0,0 +1,21 @@
+From 0e60d2112968ccb2570535bf19fb5020c9b28c08 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 7 Apr 2016 07:18:35 +0200
+Subject: [PATCH 12/57] clk: dont disable unused clocks
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ drivers/clk/clk.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/clk/clk.c
++++ b/drivers/clk/clk.c
+@@ -796,7 +796,7 @@ unlock_out:
+ 		clk_core_disable_unprepare(core->parent);
+ }
+ 
+-static bool clk_ignore_unused;
++static bool clk_ignore_unused = true;
+ static int __init clk_ignore_unused_setup(char *__unused)
+ {
+ 	clk_ignore_unused = true;