kernel: bump 4.9 to 4.9.116

Refreshed all patches

Remove upstreamed patches.
- 103-MIPS-ath79-fix-register-address-in-ath79_ddr_wb_flus.patch
- 403-mtd_fix_cfi_cmdset_0002_status_check.patch
- 001-4.11-01-mtd-m25p80-consider-max-message-size-in-m25p80_read.patch
- 001-4.15-08-bcm63xx_enet-correct-clock-usage.patch
- 001-4.15-09-bcm63xx_enet-do-not-write-to-random-DMA-channel-on-B.patch
- 900-gen_stats-fix-netlink-stats-padding.patch

Introduce a new backported patch to address ext4 breakage, introduced in 4.9.112
- backport-4.9/500-ext4-fix-check-to-prevent-initializing-reserved-inod.patch

This patch has been slightly altered to compensate for a new helper function
introduced in later kernels.

Also add ARM64_SSBD symbol to ARM64 targets still running kernel 4.9

Compile-tested on: ar71xx, bcm2710
Runtime-tested on: ar71xx

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

target/linux/layerscape/patches-4.9/202-core-linux-support-layerscape.patch

@@ -384,7 +384,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
  void  __kfree_skb(struct sk_buff *skb);
  extern struct kmem_cache *skbuff_head_cache;
  
-@@ -3057,6 +3058,7 @@ static inline void skb_free_datagram_loc
+@@ -3059,6 +3060,7 @@ static inline void skb_free_datagram_loc
  }
  int skb_kill_datagram(struct sock *sk, struct sk_buff *skb, unsigned int flags);
  int skb_copy_bits(const struct sk_buff *skb, int offset, void *to, int len);
@@ -477,7 +477,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
  /* Make sure a field is enclosed inside headers_start/headers_end section */
  #define CHECK_SKB_FIELD(field) \
  	BUILD_BUG_ON(offsetof(struct sk_buff, field) <		\
-@@ -1074,7 +1100,7 @@ static void skb_headers_offset_update(st
+@@ -1075,7 +1101,7 @@ static void skb_headers_offset_update(st
  	skb->inner_mac_header += off;
  }
  
@@ -486,7 +486,7 @@ Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
  {
  	__copy_skb_header(new, old);
  
-@@ -1082,6 +1108,7 @@ static void copy_skb_header(struct sk_bu
+@@ -1083,6 +1109,7 @@ static void copy_skb_header(struct sk_bu
  	skb_shinfo(new)->gso_segs = skb_shinfo(old)->gso_segs;
  	skb_shinfo(new)->gso_type = skb_shinfo(old)->gso_type;
  }