[Accton][as7535-28xb] Modify what onlpdump -x displays

[acctalex]

[Accton][as7535-28xb] Modify what onlpdump -x displays

1. Add a sysfs, minor_vsrsion, in x86-64-accton-as7535-28xb-cpld.c

2. Add a sysfs, minor_version, in x86-64-accton-as7535-28xb-fan.c

3. Add 3 sysfses, fpga_minor_version, cpu_cpld_version, and cpu_cpld_minor_version, in x86-64-accton-as7535-28xb-sys.c

4. Modify what onlpdump -x displays. Before modification:

        CPLD Versions:
    CPLD:0b
    FPGA:5b
    Fan CPLD:0b
   

   After modification:

        CPLD Versions:
           CPU CPLD(0x65): E1.0A
           Main CPLD(0x61): 0B.04
           Fan CPLD(0x66): 0B.13
           FPGA(0x60): 5B.16
   
        Other Versions:
           BIOS: v48.0b.03.00
           ONIE: 2020.11.00.14
           BMC: 0.4.00