x11-wm/gamescope: restore hwdata dependency after 146bb4da8d31

gamescope uses pkg-config to get pnp.ids location (like wlroots)
but parses it at runtime (unlike wlroots).
https://github.com/Plagman/gamescope/commit/5fca0702ab2c
https://github.com/Plagman/gamescope/commit/f4a33bd37e49

(cherry picked from commit 939f5c29af58f95a2cd1ca407f71a84a7e8712d8)