multimedia/pipewire: Add a patch fixing the endianness detection

Reported by:	Alex S <iwtcex@gmail.com>

multimedia/pipewire/files/patch-spa_include_spa_param_audio_raw.h

+--- spa/include/spa/param/audio/raw.h.orig	2024-09-27 10:02:20 UTC
++++ spa/include/spa/param/audio/raw.h
+@@ -11,9 +11,7 @@ extern "C" {
+ 
+ #include <stdint.h>
+ 
+-#if !defined(__FreeBSD__) && !defined(__MidnightBSD__)
+ #include <endian.h>
+-#endif
+ 
+ /**
+  * \addtogroup spa_param