drm/nouveau/bios: translate devinit pri/sec i2c bus to internal identifiers

fdo#92013.

Regression from "i2c: transition pad/ports away from being based on nvkm_object"
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/subdev/bios/init.c

@@ -267,6 +267,12 @@ init_i2c(struct nvbios_init *init, int index)
 		index = NVKM_I2C_BUS_PRI;
 		if (init->outp && init->outp->i2c_upper_default)
 			index = NVKM_I2C_BUS_SEC;
+	} else
+	if (index == 0x80) {
+		index = NVKM_I2C_BUS_PRI;
+	} else
+	if (index == 0x81) {
+		index = NVKM_I2C_BUS_SEC;
 	}
 
 	bus = nvkm_i2c_bus_find(i2c, index);