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* drop 661-fq_codel_keep_dropped_stats.patch - outdated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-4.9/302-mips_no_branch_likely.patch

@@ -0,0 +1,27 @@
+From: Felix Fietkau <nbd@nbd.name>
+Subject: mips: use -mno-branch-likely for kernel and userspace
+
+saves ~11k kernel size after lzma and ~12k squashfs size in the
+
+lede-commit: 41a039f46450ffae9483d6216422098669da2900
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ arch/mips/Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/mips/Makefile b/arch/mips/Makefile
+index 1a6bac7b076f..5b656d9a1bbe 100644
+--- a/arch/mips/Makefile
++++ b/arch/mips/Makefile
+@@ -90,7 +90,7 @@ all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
+ # machines may also.  Since BFD is incredibly buggy with respect to
+ # crossformat linking we rely on the elf2ecoff tool for format conversion.
+ #
+-cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe
++cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe -mno-branch-likely
+ cflags-y			+= -msoft-float
+ LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib
+ KBUILD_AFLAGS_MODULE		+= -mlong-calls
+-- 
+2.11.0
+