LGE KCAL control: intial adaptation from LGE G2 kernel for 8974Pro (part 2)

attempting to use LG's included board-8974.c

Conflicts:
	arch/arm/mach-msm/Makefile
	arch/arm/mach-msm/board-8974.c
	drivers/video/msm/mdss/Kconfig
	drivers/video/msm/mdss/mdss_mdp_pp.c
Fix derp of board-8974.c removal