karo: tx6: remove obsolete configs
karo: tx6: add support for boards with >= 2GiB memory
karo: tx6: set TX6_REV=0x1 where appropriate to eliminate code for unused PMIC chips
kconfig: arm: move ARCH_MX? out of choice which selects TARGETs that depend on those
karo: tx6: cleanup defconfig files
karo: cleanup after merge of v2015.10-rc2
karo: tx6: set 'CONFIG_ENV_IS_... appropriately for _mfg U-Boot
config: rename CONFIG_MX* to CONFIG_SOC_MX*
karo: configs: add missing quotes to CONFIG_SYS_EXTRA_OPTIONS value
karo: configs: update defconfig files
karo: merge with Ka-Ro specific tree for secure boot support