add:support mec_dug/tl/ul/whl

Conflicts:
	arch/arm/boot/dt.img
	arch/arm/configs/elementalx_defconfig
	arch/arm/mach-msm/Makefile.boot
	arch/arm/mach-msm/board-htc-8974.c
	arch/arm/mach-msm/board-mec-gpiomux.c
	arch/arm/mach-msm/clock-8974.c
add buildkernel scripts