port generic and ixp4xx kernel patches to 2.6.27 (compiles except for iptables, but otherwise completely untested)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12790 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/generic-2.6/patches-2.6.27/420-gpiodev.patch

@@ -0,0 +1,26 @@
+--- a/drivers/char/Kconfig
++++ b/drivers/char/Kconfig
+@@ -1010,6 +1010,13 @@
+ 
+ 	  If compiled as a module, it will be called cs5535_gpio.
+ 
++config GPIO_DEVICE
++	tristate "GPIO device support"
++	depends on GENERIC_GPIO
++	help
++	  Say Y to enable Linux GPIO device support.  This allows control of
++	  GPIO pins using a character device
++
+ config GPIO_VR41XX
+ 	tristate "NEC VR4100 series General-purpose I/O Unit support"
+ 	depends on CPU_VR41XX
+--- a/drivers/char/Makefile
++++ b/drivers/char/Makefile
+@@ -94,6 +94,7 @@
+ obj-$(CONFIG_PC8736x_GPIO)	+= pc8736x_gpio.o
+ obj-$(CONFIG_NSC_GPIO)		+= nsc_gpio.o
+ obj-$(CONFIG_CS5535_GPIO)	+= cs5535_gpio.o
++obj-$(CONFIG_GPIO_DEVICE)	+= gpio_dev.o
+ obj-$(CONFIG_GPIO_VR41XX)	+= vr41xx_giu.o
+ obj-$(CONFIG_GPIO_TB0219)	+= tb0219.o
+ obj-$(CONFIG_TELCLOCK)		+= tlclk.o