MSM: Add missing files and cleanup Makefile {Part 1/2}

This commit adds the files below from nikez 3.0.16 and cleans up the Makefile

- arch/arm/mach-msm/acpuclock-8x50.c
- arch/arm/mach-msm/arch-init-scorpion.S
- arch/arm/mach-msm/avs.c
- arch/arm/mach-msm/avs_hw.S
- arch/arm/mach-msm/dal.c
- arch/arm/mach-msm/dal.h
- arch/arm/mach-msm/gpio.c
- arch/arm/mach-msm/gpio_hw.h
- arch/arm/mach-msm/qdsp6/