drm/amdgpu/mes11: make MES_MISC_OP_CHANGE_CONFIG failure non-fatal

If the firmware is too old, just warn and return success.

Fixes: 27b79151 ("drm/amdgpu/mes: keep enforce isolation up to date")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4414


Cc: shaoyun.Liu@amd.com
Reviewed-by: Shaoyun.liu <Shaoyun.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>