drm/amdgpu: fix warning for potentially insecure string

drm/amdgpu: fix warning for potentially insecure string

linux/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c:2358:24: warning: format string is not a string literal (potentially insecure) [-Wformat-security]
                         sprintf(ring->name, amdgpu_sw_ring_name(i));
                                             ^~~~~~~~~~~~~~~~~~~~~~
linux/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c:2358:24: note: treat the string as an argument to avoid this
                         sprintf(ring->name, amdgpu_sw_ring_name(i));

Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>