Fix gcc freemdom:

Make build variables non-conditional
BoardConfig.mk/BoardConfigCommon.mk or simular variable table as follows:
    Defaults for ROM and Kernel toolchains are 4.8
    If no kernel ARM toolchain is defined default to ROM toolchain
    Set Android toolchain GCC_VERSION_AND := "enter gcc version here" (i.e. 4.9)
    Set Kernel ARM toolchain GCC_VERSION_ARM := "enter gcc version here" (i.e. 4.9)

Signed-off-by: Paul Beeler <sparksco@gmail.com>