Base yotta Target Description for Compiling with arm-none-eabi-gcc

This is a base yotta target description for compiling mbed OS with the arm gcc cross-compiler. Other target descriptions can inherit from it and add or override things as necessary (such as the link script, or preprocessor definitions).

You should not select this target to compile with directly (compilation will probably not succeed without target-specific startup code).

See CHANGELOG.md for the changes associated with each version.