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* drop 661-fq_codel_keep_dropped_stats.patch - outdated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-4.9/214-spidev_h_portability.patch

@@ -0,0 +1,29 @@
+From be9be95ff10e16a5b4ad36f903978d0cc5747024 Mon Sep 17 00:00:00 2001
+From: Felix Fietkau <nbd@nbd.name>
+Date: Fri, 7 Jul 2017 17:04:08 +0200
+Subject: kernel: fix linux/spi/spidev.h portability issues with musl
+
+Felix will try to get this define included into musl
+
+lede-commit: 795e7cf60de19e7a076a46874fab7bb88b43bbff
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ include/uapi/linux/spi/spidev.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/include/uapi/linux/spi/spidev.h b/include/uapi/linux/spi/spidev.h
+index dd5f21e75805..e5e8fea8b068 100644
+--- a/include/uapi/linux/spi/spidev.h
++++ b/include/uapi/linux/spi/spidev.h
+@@ -111,7 +111,7 @@ struct spi_ioc_transfer {
+ 
+ /* not all platforms use <asm-generic/ioctl.h> or _IOC_TYPECHECK() ... */
+ #define SPI_MSGSIZE(N) \
+-	((((N)*(sizeof (struct spi_ioc_transfer))) < (1 << _IOC_SIZEBITS)) \
++	((((N)*(sizeof (struct spi_ioc_transfer))) < (1 << 13)) \
+ 		? ((N)*(sizeof (struct spi_ioc_transfer))) : 0)
+ #define SPI_IOC_MESSAGE(N) _IOW(SPI_IOC_MAGIC, 0, char[SPI_MSGSIZE(N)])
+ 
+-- 
+2.11.0
+