Fix KISS interface CRC32 checksum
Fix KISS interface CRC32 checksum

Tested for compatibility with old interface version

libcsp/libcsp,Psykar/kubos,Psykar/kubos,marshall/libcsp,kubostech/KubOS,Psykar/kubos,marshall/libcsp,GomSpace/libcsp,satlab/libcsp,Psykar/kubos,satlab/libcsp,satlab/libcsp,libcsp/libcsp,GomSpace/libcsp,pacheco017/libcsp,pacheco017/libcsp,Psykar/kubos,kubostech/KubOS,Psykar/kubos,Psykar/kubos,pacheco017/libcsp,GomSpace/libcsp,pacheco017/libcsp,marshall/libcsp