[Xtensa/RISC-V] Remove FAR and CODE qualifiers from arch-specific files

[gustavonihei]

Summary

This PR intends to remove all references to the FAR and CODE qualifiers from Xtensa and RISC-V files.
FAR and CODE are defined to nothing on both architectures.

Impact

Should have no impact.

Testing

CI build pass.

[gustavonihei]

Please, ignore the nxstyle errors due to mixed case on the ESP32-C3 BLE adapter.

Error: /home/runner/work/incubator-nuttx/incubator-nuttx/nuttx/arch/risc-v/src/esp32c3/esp32c3_ble_adapter.c:333:12: error: Mixed case identifier found
Error: /home/runner/work/incubator-nuttx/incubator-nuttx/nuttx/arch/risc-v/src/esp32c3/esp32c3_ble_adapter.c:334:12: error: Mixed case identifier found
Error: /home/runner/work/incubator-nuttx/incubator-nuttx/nuttx/arch/risc-v/src/esp32c3/esp32c3_ble_adapter.c:335:11: error: Mixed case identifier found
Error: /home/runner/work/incubator-nuttx/incubator-nuttx/nuttx/arch/risc-v/src/esp32c3/esp32c3_ble_adapter.c:2407:9: error: Mixed case identifier found
Error: /home/runner/work/incubator-nuttx/incubator-nuttx/nuttx/arch/risc-v/src/esp32c3/esp32c3_ble_adapter.c:2431:2: error: Mixed case identifier found
Error: /home/runner/work/incubator-nuttx/incubator-nuttx/nuttx/arch/risc-v/src/esp32c3/esp32c3_ble_adapter.c:2455:8: error: Mixed case identifier found
Error: Process completed with exit code 1.

[xiaoxiang781216]

@gustavonihei do you plan to apply the same change to other arch(e.g. arm, sim...)?

[gustavonihei]

@gustavonihei do you plan to apply the same change to other arch(e.g. arm, sim...)?

I think it is important to consider those other archs, but not on this PR.
The changes begin with a simple find/sed, but then the manual changes for nxstyle take a considerable amount of time.

[xiaoxiang781216]

I thank we can ignore the style warning in these patches.

[yamt]

what's the motivation of the change? make the code look neater?

a downside of this kind of changes is that it can introduce unnecessary differences among implementations which were otherwise more similar.

[gustavonihei]

what's the motivation of the change? make the code look neater?

Exactly. This will make the code cleaner, which benefits readability.

a downside of this kind of changes is that it can introduce unnecessary differences among implementations which were otherwise more similar.

Soon other archs may also have FAR and CODE removed, so this won’t be an issue.