accton/as9726-32d: Modify onlpdump -x output format and support show MFU ver

[rayxhuangEC]

What did I do

• Sync [ACCTON][A9726-32D] Modify the version display for command onlpdump -x #26
• Sync [Accton][AS9726-32D] Show MFU ver with onlpdump -x #161

Output

root@localhost:~# uname -a
Linux localhost 4.19.81-OpenNetworkLinux #1 SMP Mon Jun 1 06:15:33 UTC 2026 x86_64 GNU/Linux
root@localhost:~# onlpdump -x
        CPLD Versions:
           CPU CPLD(0x65): E1
           FPGA(0x60): 08
           Main CPLD2(0x61): 07
           Main CPLD3(0x62): 04
           FAN CPLD(0x66): A4
        Other Versions:
           BIOS: v45.0a.02.00
           ONIE: 2020.08.00.14
           MFU:
root@localhost:~# ls /var/tmp/last_updated_MFU_version
ls: cannot access '/var/tmp/last_updated_MFU_version': No such file or directory
root@localhost:~# ls /var/tmp
root@localhost:~# echo '0xa0' > /var/tmp/last_updated_MFU_version
root@localhost:~# ls /var/tmp
last_updated_MFU_version
root@localhost:~# onlpdump -x
        CPLD Versions:
           CPU CPLD(0x65): E1
           FPGA(0x60): 08
           Main CPLD2(0x61): 07
           Main CPLD3(0x62): 04
           FAN CPLD(0x66): A4
        Other Versions:
           BIOS: v45.0a.02.00
           ONIE: 2020.08.00.14
           MFU: 0xa0