bcm27xx: base-files: set_preinit_iface: add RPi 5

Add missing Rasoberry Pi 5 board_name to set_preinit_iface in order to get
ethernet working on failsafe mode.

Fixes: 8b63d9a ("bcm27xx: add new bcm2712 subtarget")
Signed-off-by: Álvaro Fernández Rojas <[email protected]>

target/linux/bcm27xx/base-files/lib/preinit/05_set_preinit_iface_brcm2708

@@ -12,6 +12,7 @@ set_preinit_iface() {
 	raspberrypi,400 |\
 	raspberrypi,4-compute-module |\
 	raspberrypi,4-model-b |\
+	raspberrypi,5-model-b |\
 	raspberrypi,model-b |\
 	raspberrypi,model-b-plus |\
 	raspberrypi,model-b-rev2)