[PATCH v4 0/8] RISC-V: Implement support for big endian targets

[Marcus Comstedt]

This is an updated patch series for big endian RISC-V support.
Changes since v3:

 * Removed changes to config.sub, which has already been updated

 * Fixed the incorrect setup of the "abis" variable in ld-riscv-elf.exp

 * Removed documentation of the abbreviated option forms "-mlittle" and
   "-mbig"