kernel: split patches folder up into backport, pending and hack folders

* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused

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

target/linux/generic/hack-4.9/901-debloat_sock_diag.patch

@@ -0,0 +1,112 @@
+From 3b6115d6b57a263bdc8c9b1df273bd4a7955eead Mon Sep 17 00:00:00 2001
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sat, 8 Jul 2017 08:16:31 +0200
+Subject: debloat: add some debloat patches, strip down procfs and make O_DIRECT support optional, saves ~15K after lzma on MIPS
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ net/Kconfig         | 3 +++
+ net/core/Makefile   | 3 ++-
+ net/core/sock.c     | 2 ++
+ net/ipv4/Kconfig    | 1 +
+ net/netlink/Kconfig | 1 +
+ net/packet/Kconfig  | 1 +
+ net/unix/Kconfig    | 1 +
+ 7 files changed, 11 insertions(+), 1 deletion(-)
+
+diff --git a/net/Kconfig b/net/Kconfig
+index 38a0c857eb52..b4621e1f3470 100644
+--- a/net/Kconfig
++++ b/net/Kconfig
+@@ -95,6 +95,9 @@ source "net/netlabel/Kconfig"
+ 
+ endif # if INET
+ 
++config SOCK_DIAG
++	bool
++
+ config NETWORK_SECMARK
+ 	bool "Security Marking"
+ 	help
+diff --git a/net/core/Makefile b/net/core/Makefile
+index d6508c2ddca5..bee4adde14d8 100644
+--- a/net/core/Makefile
++++ b/net/core/Makefile
+@@ -9,8 +9,9 @@ obj-$(CONFIG_SYSCTL) += sysctl_net_core.o
+ 
+ obj-y		     += dev.o ethtool.o dev_addr_lists.o dst.o netevent.o \
+ 			neighbour.o rtnetlink.o utils.o link_watch.o filter.o \
+-			sock_diag.o dev_ioctl.o tso.o sock_reuseport.o
++			dev_ioctl.o tso.o sock_reuseport.o
+ 
++obj-$(CONFIG_SOCK_DIAG) += sock_diag.o
+ obj-$(CONFIG_XFRM) += flow.o
+ obj-y += net-sysfs.o
+ obj-$(CONFIG_PROC_FS) += net-procfs.o
+diff --git a/net/core/sock.c b/net/core/sock.c
+index 1989b3dd6d17..d4ca8db4166a 100644
+--- a/net/core/sock.c
++++ b/net/core/sock.c
+@@ -1457,9 +1457,11 @@ void sk_destruct(struct sock *sk)
+ 
+ static void __sk_free(struct sock *sk)
+ {
++#ifdef CONFIG_SOCK_DIAG
+ 	if (unlikely(sock_diag_has_destroy_listeners(sk) && sk->sk_net_refcnt))
+ 		sock_diag_broadcast_destroy(sk);
+ 	else
++#endif
+ 		sk_destruct(sk);
+ }
+ 
+diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
+index b54b3ca939db..74ecf598622c 100644
+--- a/net/ipv4/Kconfig
++++ b/net/ipv4/Kconfig
+@@ -408,6 +408,7 @@ config INET_XFRM_MODE_BEET
+ 
+ config INET_DIAG
+ 	tristate "INET: socket monitoring interface"
++	select SOCK_DIAG
+ 	default y
+ 	---help---
+ 	  Support for INET (TCP, DCCP, etc) socket monitoring interface used by
+diff --git a/net/netlink/Kconfig b/net/netlink/Kconfig
+index 5d6e8c05b3d4..8a2696d66c20 100644
+--- a/net/netlink/Kconfig
++++ b/net/netlink/Kconfig
+@@ -4,6 +4,7 @@
+ 
+ config NETLINK_DIAG
+ 	tristate "NETLINK: socket monitoring interface"
++	select SOCK_DIAG
+ 	default n
+ 	---help---
+ 	  Support for NETLINK socket monitoring interface used by the ss tool.
+diff --git a/net/packet/Kconfig b/net/packet/Kconfig
+index cc55b35f80e5..9a83c86f5480 100644
+--- a/net/packet/Kconfig
++++ b/net/packet/Kconfig
+@@ -18,6 +18,7 @@ config PACKET
+ config PACKET_DIAG
+ 	tristate "Packet: sockets monitoring interface"
+ 	depends on PACKET
++	select SOCK_DIAG
+ 	default n
+ 	---help---
+ 	  Support for PF_PACKET sockets monitoring interface used by the ss tool.
+diff --git a/net/unix/Kconfig b/net/unix/Kconfig
+index 8b31ab85d050..6548cf3ea7f1 100644
+--- a/net/unix/Kconfig
++++ b/net/unix/Kconfig
+@@ -22,6 +22,7 @@ config UNIX
+ config UNIX_DIAG
+ 	tristate "UNIX: socket monitoring interface"
+ 	depends on UNIX
++	select SOCK_DIAG
+ 	default n
+ 	---help---
+ 	  Support for UNIX socket monitoring interface used by the ss tool.
+-- 
+2.11.0
+