kernel: update linux 3.2 to 3.2.12

include/kernel-version.mk

target/linux/ar71xx/Makefile

target/linux/au1000/Makefile

target/linux/brcm47xx/Makefile

target/linux/cns21xx/Makefile

target/linux/ep93xx/Makefile

target/linux/generic/patches-3.2/440-block2mtd_init.patch

...neric/patches-3.2/643-bridge_remove_ipv6_dependency.patch

...ric/patches-3.2/644-bridge_optimize_netfilter_hooks.patch

target/linux/malta/Makefile

target/linux/mpc52xx/Makefile

target/linux/omap4/Makefile

target/linux/ppc40x/Makefile

target/linux/ppc44x/Makefile

target/linux/ppc44x/patches/100-openwrt_flashmap.patch

target/linux/ramips/Makefile

target/linux/uml/Makefile