drm/nouveau/msppp: rename from ppp (no binary change)

Switch to NVIDIA's name for the device.

The namespace of NVKM is being changed to nvkm_ instead of nouveau_,
which will be used for the DRM part of the driver.  This is being
done in order to make it very clear as to what part of the driver a
given symbol belongs to, and as a minor step towards splitting the
DRM driver out to be able to stand on its own (for virt).

Because there's already a large amount of churn here anyway, this is
as good a time as any to also switch to NVIDIA's device and chipset
naming to ease collaboration with them.

A comparison of objdump disassemblies proves no code changes.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c
index 2ea1dbc..6902505 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/gm100.c
@@ -52,7 +52,7 @@
 #include <engine/bsp.h>
 #include <engine/msvld.h>
 #include <engine/vp.h>
-#include <engine/ppp.h>
+#include <engine/msppp.h>
 #include <engine/pm.h>
 
 int
@@ -96,7 +96,7 @@
 #if 0
 		device->oclass[NVDEV_ENGINE_MSVLD  ] = &nve0_msvld_oclass;
 		device->oclass[NVDEV_ENGINE_VP     ] = &nve0_vp_oclass;
-		device->oclass[NVDEV_ENGINE_PPP    ] = &nvc0_ppp_oclass;
+		device->oclass[NVDEV_ENGINE_MSPPP  ] = &nvc0_msppp_oclass;
 #endif
 		break;
 	case 0x124:
@@ -139,7 +139,7 @@
 		device->oclass[NVDEV_ENGINE_CE2    ] = &gm204_ce2_oclass;
 		device->oclass[NVDEV_ENGINE_MSVLD  ] = &nve0_msvld_oclass;
 		device->oclass[NVDEV_ENGINE_VP     ] = &nve0_vp_oclass;
-		device->oclass[NVDEV_ENGINE_PPP    ] = &nvc0_ppp_oclass;
+		device->oclass[NVDEV_ENGINE_MSPPP  ] = &nvc0_msppp_oclass;
 #endif
 		break;
 	default: