drm/nvc0/pm: parse clock for pll 0x0a (0x137020) from perf table

Signed-off-by: Ben Skeggs <[e-mail]>

drivers/gpu/drm/nouveau/nouveau_drv.h

···
 	u32 memory;
 	u32 shader;
 	u32 unk05;
+	u32 unk0a;
 
 	u8 voltage;
 	u8 fanspeed;

drivers/gpu/drm/nouveau/nouveau_perf.c

···
 			} else {
 				perflvl->shader = ROM16(subent(3)) & 0xfff;
 				perflvl->core   = perflvl->shader / 2;
+				perflvl->unk0a  = ROM16(subent(4)) & 0xfff;
 				perflvl->memory = ROM16(subent(5)) & 0xfff;
 			}
 
 			perflvl->core *= 1000;
 			perflvl->shader *= 1000;
 			perflvl->memory *= 1000;
+			perflvl->unk0a *= 1000;
 			break;
 		}