revert 15922 - add back 2.6.29 kernel support

include/kernel-version.mk

target/linux/generic-2.6/config-2.6.29

...et/linux/generic-2.6/files-2.6.29/drivers/char/gpio_dev.c

...eneric-2.6/files-2.6.29/drivers/input/misc/gpio_buttons.c

...t/linux/generic-2.6/files-2.6.29/drivers/leds/leds-alix.c

...nux/generic-2.6/files-2.6.29/drivers/leds/ledtrig-morse.c

...ux/generic-2.6/files-2.6.29/drivers/leds/ledtrig-netdev.c

...nux/generic-2.6/files-2.6.29/include/linux/gpio_buttons.h

...t/linux/generic-2.6/files-2.6.29/include/linux/gpio_dev.h

...x/generic-2.6/patches-2.6.29/004-extra_optimization.patch

...inux/generic-2.6/patches-2.6.29/006-gcc4_inline_fix.patch

.../linux/generic-2.6/patches-2.6.29/007-samsung_flash.patch

target/linux/generic-2.6/patches-2.6.29/011-mips_boot.patch

...c-2.6/patches-2.6.29/020-mips_multi_machine_support.patch

...ic-2.6/patches-2.6.29/021-mips_simple_prom_emulator.patch

.../generic-2.6/patches-2.6.29/022-mips_div64_gcc4.4.0.patch

....6/patches-2.6.29/022-mips_force_sig_address_errors.patch

...linux/generic-2.6/patches-2.6.29/060-block2mtd_init.patch

...t/linux/generic-2.6/patches-2.6.29/065-rootfs_split.patch

...c-2.6/patches-2.6.29/066-rootfs_split_squashfs4_fix.patch