Make the kernel image format parametric instead of a chain of if/elses

Change-Id: I54bfcdecb8647f7bcf744e72b2de19fcf4e4e7ac
build: Add QCOM target-specific config

 * Needed to support global DirectTract config on legacy targets
 * Let's also eliminate some boilerplate

Change-Id: I736c10a5e7e1f3d1e0de9e60f29b60add276f151
qcom_utils: Update list of QCOM_BOARD_PLATFORMS

Add msm8226 (Moto G) and other upcoming platforms
Change-Id: Icf895cbcf86791ca800636a1c0893b3a905a27a0
build: Fix cflags for QC targets

Change-Id: I2281bec3afb4d80e80845718d880dc24ef7baf32