enabled cmsdk-watchdog and added watchdog device to vul_model

[mushtaqk07]

enabled cmsdk-watchdog and added watchdog device vulcano-soc.

unit-test:  
=======
uart:~$ [00:00:00.000,001] <wrn> boot_status: AB GPIO not available, defaulting
[00:00:00.000,001] <wrn> boot_status: Gold GPIO not available, defaulting
[00:00:00.000,001] <inf> boot_status: Boot status: active_device=A, recovery=0
[00:00:00.000,002] <inf> rtc_fpga: rtc time set to: 2025-10-15 02:17:30

[00:00:00.000,002] <inf> part_core: partition_init: with 8 devices, mask: 0x000001fe
[00:00:00.000,002] <inf> bootflow: Bootflow: act_id=5
*** Booting Zephyr OS build 985a45287173 ***

uart:~$
uart:~$
uart:~$
uart:~$ rtc get rtc0
2025-10-15T02:17:35.000
uart:~$ rtc get rtc0Feeding taskwdt_test task watchdog...

2025-10-15T02:17:40.000
uart:~$ rtc get rtc0Feeding taskwdt_test task watchdog...

2025-10-15T02:17:50.000
uart:~$ rtc get rtc0Feeding taskwdt_test task watchdog...

2025-10-15T02:18:00.000
uart:~$ rtc get rtc0Feeding taskwdt_test task watchdog...

2025-10-15T02:18:10.000
uart:~$ rtc get rtc0Feeding taskwdt_test task watchdog...

2025-10-15T02:18:20.000
uart:~$ rtc get rtc0Task watchdog expired for taskwdt_test (channel 0)
2025-10-15T02:18:50.000
uart:~$
uart:~$ Task watchdog channel 0 registered for taskwdt_testFeeding taskwdt_test task watchdog...

uart:~$ [00:00:00.000,001] <wrn> boot_status: AB GPIO not available, defaulting
[00:00:00.000,001] <wrn> boot_status: Gold GPIO not available, defaulting
[00:00:00.000,001] <inf> boot_status: Boot status: active_device=A, recovery=0
[00:00:00.000,002] <inf> rtc_fpga: rtc time set to: 2025-10-15 02:17:30

[00:00:00.000,002] <inf> part_core: partition_init: with 8 devices, mask: 0x000001fe
[00:00:00.000,002] <inf> bootflow: Bootflow: act_id=5
*** Booting Zephyr OS build 985a45287173 ***
Feeding taskwdt_test task watchdog...
Feeding taskwdt_test task watchdog...