Revert "lava-templates/fvp-*: Comment out license_variable param"

This reverts commit e9a0f8375d867e8f08cfab47e1728d643a439f7b.

Reason for revert: Seeing a timeout in fvp-linux-dtb.dyn-fip.uboot-cortexa710x4-debug FVP test, checking if related.

Change-Id: I88abf4dec11d0701c4e27ec33f2acebc538711ea
2 files changed