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* drop 661-fq_codel_keep_dropped_stats.patch - outdated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-3.18/253-ssb_b43_default_on.patch

@@ -0,0 +1,29 @@
+--- a/drivers/ssb/Kconfig
++++ b/drivers/ssb/Kconfig
+@@ -29,6 +29,7 @@ config SSB_SPROM
+ config SSB_BLOCKIO
+ 	bool
+ 	depends on SSB
++	default y
+ 
+ config SSB_PCIHOST_POSSIBLE
+ 	bool
+@@ -49,7 +50,7 @@ config SSB_PCIHOST
+ config SSB_B43_PCI_BRIDGE
+ 	bool
+ 	depends on SSB_PCIHOST
+-	default n
++	default y
+ 
+ config SSB_PCMCIAHOST_POSSIBLE
+ 	bool
+--- a/drivers/bcma/Kconfig
++++ b/drivers/bcma/Kconfig
+@@ -17,6 +17,7 @@ config BCMA
+ config BCMA_BLOCKIO
+ 	bool
+ 	depends on BCMA
++	default y
+ 
+ config BCMA_HOST_PCI_POSSIBLE
+ 	bool