Missing NVM56 (KP2C7) firmware for Precision Mobile 7740

[eternaleye]

https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=kp2c7

No Thunderbolt firmwares appear to be available for the 7740 via LVFS.

Current version on the machine:

% sudo fwupdmgr get-devices
Precision 7740
│
└─Thunderbolt host controller:
      Device ID:          d914d64714e4f7adbce7f86f54e3ec9278902b20
      Summary:            Unmatched performance for high-speed I/O
      Current version:    41.01
      Vendor:             Dell (THUNDERBOLT:0x00D4|TBT:0x00D4)
      GUIDs:              49c8274e-bc6a-5707-a197-ca0c9a35bda0 ← THUNDERBOLT\VEN_00D4&DEV_0927&REV_00
                          3f759afe-e19e-5d26-bb64-0aad84c82ac3 ← THUNDERBOLT\VEN_00D4&DEV_0927
                          81db9688-b112-5e24-9f92-e96f05770934 ← TBT-00d40927-native
                          1707b992-6eb5-5913-8601-6ac003d0f6c1 ← TBT-00d40927-native-controller0-0
      Device Flags:       • Internal device
                          • Updatable
                          • System requires external power source
                          • Device stages updates