Ivan Grokhotkov de798541dc tools: use riscv32-esp-elf toolchain for ESP32-S2 RISC-V ULP
riscv32-esp-elf toolchain (used for ESP32-C3) can also be used for
ESP32-S2 RISC-V ULP coprocessor.

This removes the riscv-none-embed-gcc toolchain which was originally
used for the ULP, and updates the docs and CMake files to use
riscv32-esp-elf.

Some flags are cleaned up and workarounds removed from CMake toolchain
file.
2020-12-29 19:19:18 +00:00
..
2020-10-09 15:05:01 +08:00
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