add build kerneldeb -- modify dts

hc

2023-10-25 6c2073b7aa40e29d0eca7d571dd7bc590c7ecaa7

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config BR2_PACKAGE_LINUX_SERIAL_TEST
    bool "linux-serial-test"
    help
      Linux Serial Test Application
 
      https://github.com/cbrake/linux-serial-test