Create product device name for Trout Trout/Gull should have its own product name instead of sharing with Cuttlefish, so that we don't need to remove others from `out/target/product` before compiling, and LV build tools may tell if the target and image are mismatching. Bug: 175345855 Test: Build, flash and boot Change-Id: I36ef500183d5f4dff2d78db29c3c7eff97d832b9