rx: Upgrade RX gcc, binutils, gdb to support new RX devices

[duynguyenxa]

This update integrates the latest Renesas RX toolchain components into the Zephyr SDK build
These updates are required to enable future RX device support in Zephyr and align SDK toolchains with the upstream RX porting effort.

---

Binutils PR: zephyrproject-rtos/binutils-gdb#21
GDB PR: zephyrproject-rtos/binutils-gdb#20
GCC PR: zephyrproject-rtos/gcc#63

[stephanosio]

@duynguyenxa Binutils, GDB and GCC PRs have been merged. Please update this PR to reference the merged refs.

[duynguyenxa]

@duynguyenxa Binutils, GDB and GCC PRs have been merged. Please update this PR to reference the merged refs.

Hi @stephanosio , Thank you for checking, I've updated the submodule revision

[stephanosio]

It looks like this broke RX GCC build on macOS:

[ALL  ]    /opt/homebrew/bin/bash /Volumes/Workspace/build/.build/rx-zephyr-elf/src/binutils/gas/../ylwrap /Volumes/Workspace/build/.build/rx-zephyr-elf/src/binutils/gas/config/rx-parse.y y.tab.c config/rx-parse.c y.tab.h config/rx-parse.h -- bison -y   -d ;
[ALL  ]    /Volumes/Workspace/build/.build/rx-zephyr-elf/src/binutils/gas/config/rx-parse.y:155.9-19: syntax error, unexpected identifier, expecting string
[ERROR]    make[5]: *** [config/rx-parse.c] Error 1
[ERROR]    make[5]: *** Waiting for unfinished jobs....

Full build log: https://github.com/zephyrproject-rtos/sdk-ng/actions/runs/20781224032/artifacts/5050586307

---

UPDATE:

It looks like Apple-provided bison (/usr/bin/bison) is outdated and does not support %define parse.error verbose.

We could either replace it with %error-verbose, or make the build system use a more up-to-date bison; let me see if I can do the latter ...