fix conflicting declaration of pipewire_init:
https://github.com/libretro/RetroArch/commit/63a146f0ea4df69f06e3b8d8236e26fa312eb22d

Index: audio/drivers/pipewire.c
--- audio/drivers/pipewire.c.orig
+++ audio/drivers/pipewire.c
@@ -157,7 +157,7 @@ static const struct pw_registry_events registry_events
       .global = registry_event_global,
 };
 
-static void *pipewire_init(const char *device, unsigned rate,
+static void *pwire_init(const char *device, unsigned rate,
       unsigned latency,
       unsigned block_frames,
       unsigned *new_rate)
@@ -443,7 +443,7 @@ static size_t pipewire_buffer_size(void *data)
 }
 
 audio_driver_t audio_pipewire = {
-      pipewire_init,
+      pwire_init,
       pipewire_write,
       pipewire_stop,
       pipewire_start,
