Makefile for building gfrg240 u-boot images.

Makefile.gfiber that builds dev, prod, and openbox u-boot images
by executing the required config and build steps from the quantenna
tools.

Search for Quantenna specific files under quantenna/
Previously, Makefiles added -I parameters to CFLAGS that would collect
include files from outside the u-boot tree.

Add support for CONFIG_DISABLE_INPUT configuration to disable
console input for production builds.

Change-Id: I7c48ac2d9b2e6052eb7c1048e9245e6174d17fea
9 files changed