liblo: fix build with musl

When sys/poll.h gets included it results in a warning, to include
poll.h. All warnings are treated as errors by liblo.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

libs/liblo/patches/001-fix-musl-include.patch

@@ -0,0 +1,11 @@
+--- a/src/server.c
++++ b/src/server.c
+@@ -48,7 +48,7 @@
+ #include <netdb.h>
+ #include <sys/socket.h>
+ #ifdef HAVE_POLL
+-#include <sys/poll.h>
++#include <poll.h>
+ #endif
+ #include <sys/un.h>
+ #include <arpa/inet.h>