nouveau: r535.c:1266:3: error: label at end of compound statement default: with gcc-8

[Naresh Kamboju]

Following build warnings / errors noticed on Linux next-20240429 tag on the
arm64, arm and riscv with gcc-8 and gcc-13 builds pass.

Reported-by: Linux Kernel Functional Testing <lkft at linaro.org>

Commit id:
 b58a0bc904ff nouveau: add command-line GSP-RM registry support

Buids:
--
  gcc-8-arm64-defconfig - Fail
  gcc-8-arm-defconfig - Fail
  gcc-8-riscv-defconfig - Fail

Build log:
----
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c: In function 'build_registry':
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:1266:3: error: label at
end of compound statement
   default:
   ^~~~~~~
make[7]: *** [scripts/Makefile.build:244:
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.o] Error 1

metadata:
  git_describe: next-20240429
  git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
  git_short_log: b0a2c79c6f35 ("Add linux-next specific files for 20240429")
  arch: arm64, arm, riscv
  toolchain: gcc-8

Steps to reproduce:
----
# tuxmake --runtime podman --target-arch arm64 --toolchain gcc-8
--kconfig defconfig

Links:
 - https://storage.tuxsuite.com/public/linaro/lkft/builds/2flcoOuqVJfhTvX4AOYsWMd5hqe/
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240429/testrun/23704376/suite/build/test/gcc-8-defconfig/history/
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240429/testrun/23705756/suite/build/test/gcc-8-defconfig/details/


--
Linaro LKFT
https://lkft.linaro.org