Adding machine definitions for the epiphany (http://www.adapteva.com/) chip using https://github.com/adapteva/epiphany-binutils-gdb.
For binutils implementation that defines TARGET_ARCH MACHINE "epiphany": 4643 See https://github.com/adapteva/epiphany-binutils-gdb/blob/epiphany-binutils-2.24/bfd/elf32-epiphany.c
For example layer that uses these defines see https://github.com/peteasa/meta-epiphany.git
Signed-off-by: Peter Saunderson <peteasa@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
