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* drop 661-fq_codel_keep_dropped_stats.patch - outdated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/pending-4.9/206-mips-disable-vdso.patch

@@ -0,0 +1,28 @@
+From: Felix Fietkau <nbd@nbd.name>
+Subject: kernel: disable MIPS VDSO by default until the cache issues have been resolved
+
+lede-commit: 1185e645a773c86aa88cf04d0e2911dc62eb43f5
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ arch/mips/vdso/Makefile | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile
+index c3dc12a8b7d9..28f66e3bb2c3 100644
+--- a/arch/mips/vdso/Makefile
++++ b/arch/mips/vdso/Makefile
+@@ -28,9 +28,9 @@ aflags-vdso := $(ccflags-vdso) \
+ ifndef CONFIG_CPU_MIPSR6
+   ifeq ($(call ld-ifversion, -lt, 225000000, y),y)
+     $(warning MIPS VDSO requires binutils >= 2.25)
+-    obj-vdso-y := $(filter-out gettimeofday.o, $(obj-vdso-y))
+-    ccflags-vdso += -DDISABLE_MIPS_VDSO
+   endif
++  obj-vdso-y := $(filter-out gettimeofday.o, $(obj-vdso-y))
++  ccflags-vdso += -DDISABLE_MIPS_VDSO
+ endif
+ 
+ # VDSO linker flags.
+-- 
+2.11.0
+