[PATCH] libkmpris: allow MultiplexerModel to show actual player name

[PATCH] libkmpris: allow MultiplexerModel to show actual player name

The lock screen needs it to show the actual player name instead of
"Choose player automatically"

Gbp-Pq: Name upstream_e4e0dee5_libkmpris-allow-MultiplexerModel-to-show-actual-player-name.patch