drm/nouveau/top/gv100-: translate entry for the GSP

So we're able to connect fault/interrupt handling to the GSP subdev.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c

@@ -73,6 +73,7 @@ gk104_top_oneinit(struct nvkm_top *top)
 #define A_(A) if (inst == 0) info->index = NVKM_ENGINE_##A
 #define B_(A) if (inst + NVKM_ENGINE_##A##0 < NVKM_ENGINE_##A##_LAST + 1)      \
 		info->index = NVKM_ENGINE_##A##0 + inst
+#define C_(A) if (inst == 0) info->index = NVKM_SUBDEV_##A
 		switch (type) {
 		case 0x00000000: A_(GR    ); break;
 		case 0x00000001: A_(CE0   ); break;
@@ -88,6 +89,7 @@ gk104_top_oneinit(struct nvkm_top *top)
 		case 0x0000000f: A_(NVENC1); break;
 		case 0x00000010: B_(NVDEC ); break;
 		case 0x00000013: B_(CE    ); break;
+		case 0x00000014: C_(GSP   ); break;
 			break;
 		default:
 			break;