ar71xx: add missing DEVICE_TITLE for mikrotik devices

Signed-off-by: Felix Fietkau <[email protected]>

target/linux/ar71xx/image/mikrotik.mk

@@ -10,11 +10,13 @@ define Device/mikrotik
 endef
 
 define Device/nand-64m
+  DEVICE_TITLE := MikroTik RouterBoard with 64 MB NAND flash
 $(Device/mikrotik)
   KERNEL := kernel-bin | kernel2minor -s 512 -e -c
 endef
 
 define Device/nand-large
+  DEVICE_TITLE := MikroTik RouterBoard with >= 128 MB NAND flash
 $(Device/mikrotik)
   KERNEL := kernel-bin | kernel2minor -s 2048 -e -c
 endef
@@ -22,6 +24,7 @@ endef
 TARGET_DEVICES += nand-64m nand-large
 
 define Device/rb-nor-flash-16M
+  DEVICE_TITLE := MikroTik RouterBoard with 16 MB NOR flash
   BLOCKSIZE := 64k
   IMAGE_SIZE := 16000k
   LOADER_TYPE := elf