<linux/netlink.h> pulls in <linux/sysinfo.h> which conflicts with the musl one.

--- qemu-2.12.0/linux-user/syscall.c.old	2018-07-03 02:34:54.660000000 -0500
+++ qemu-2.12.0/linux-user/syscall.c	2018-07-03 03:43:28.580000000 -0500
@@ -45,7 +45,7 @@
 #include <sys/sem.h>
 #include <sys/statfs.h>
 #include <utime.h>
-#include <sys/sysinfo.h>
+#include <linux/sysinfo.h>
 #include <sys/signalfd.h>
 //#include <sys/user.h>
 #include <netinet/ip.h>