games/moonlight-embedded-devel: Update 2.7.6 => 2.7.7

Changelog:

1. Add support for VT switch with drm platform and with -nograb.
2. Fix ipv6 connect error.
3. Remote zwp-output and replace with wp-fractional-scale for wayland.
4. Some others small fixs.

https://github.com/armin-25689/moonlight-embedded/releases/tag/v2.7.7

Commit Log:
https://github.com/armin-25689/moonlight-embedded/compare/v2.7.6...v2.7.7

Remove duplicate dependency on libdrm in LIB_DEPENDS.

PR: 293191