Revert "Revert "Adding user agent for vestel-tv_2019_mb17x_fvp""
Revert "Revert "Adding user agent for vestel-tv_2019_mb17x_fvp""

This reverts commit 3a7ae6fac000d1bcd1aa5f65f6dff7e7c56dbcec.

bbc/device-identification-data,bbc/device-identification-data