LibC: Add posix_fadvise as no-op

userspace/libraries/LibC/fcntl.cpp

@@ -45,3 +45,12 @@ int fcntl(int fildes, int cmd, ...)
 
 	return syscall(SYS_FCNTL, fildes, cmd, extra);
 }
+
+int posix_fadvise(int fd, off_t offset, off_t len, int advice)
+{
+	(void)fd;
+	(void)offset;
+	(void)len;
+	(void)advice;
+	return 0;
+}