add build kerneldeb -- modify dts

hc

2023-10-25 6c2073b7aa40e29d0eca7d571dd7bc590c7ecaa7

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SFR NEUFBOX 4 SERCOMM BOARD
M:    Álvaro Fernández Rojas <noltari@gmail.com>
S:    Maintained
F:    board/sfr/nb4_ser/
F:    include/configs/sfr_nb4_ser.h
F:    configs/sfr_nb4-ser_ram_defconfig