kernel: bump 4.14 to 4.14.77

Refreshed all patches.

Altered patches:
- 666-Add-support-for-MAP-E-FMRs-mesh-mode.patch

New symbol for arm targets:
- HARDEN_BRANCH_PREDICTOR

Compile-tested on: ar71xx, cns3xxx, imx6
Runtime-tested on: ar71xx, cns3xxx, imx6

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>

target/linux/generic/hack-4.14/721-phy_packets.patch

@@ -101,7 +101,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	help
 --- a/net/core/dev.c
 +++ b/net/core/dev.c
-@@ -2982,10 +2982,20 @@ static int xmit_one(struct sk_buff *skb,
+@@ -3004,10 +3004,20 @@ static int xmit_one(struct sk_buff *skb,
  	if (!list_empty(&ptype_all) || !list_empty(&dev->ptype_all))
  		dev_queue_xmit_nit(skb, dev);