upgrade 3.12 targets to 3.12.5

include/kernel-version.mk

target/linux/generic/patches-3.12/100-overlayfs.patch

.../471-mtd-m25p80-allow-to-disable-small-sector-erase.patch

...t/linux/generic/patches-3.12/630-packet_socket_type.patch

target/linux/generic/patches-3.12/655-increase_skb_pad.patch

...generic/patches-3.12/656-skb_reduce_truesize-helper.patch

...6-allow-rejecting-with-source-address-failed-policy.patch

target/linux/generic/patches-3.12/721-phy_packets.patch

...ic/patches-3.12/820-usb_add_usb_find_device_by_name.patch

target/linux/generic/patches-3.12/902-debloat_proc.patch

target/linux/mxs/Makefile

target/linux/omap/Makefile

...AP2-hwmod-Extract-no-idle-and-no-reset-info-from-DT.patch

...ARM_OMAP2plus_irq_AM33XX_add_missing_register_check.patch

target/linux/sunxi/Makefile