Portability fixes for LSB compatibility.

diff --git a/dlls/winmm/joystick/joystick.c b/dlls/winmm/joystick/joystick.c
index df45b39..2515465 100644
--- a/dlls/winmm/joystick/joystick.c
+++ b/dlls/winmm/joystick/joystick.c
@@ -45,6 +45,9 @@
 #ifdef HAVE_SYS_IOCTL_H
 #include <sys/ioctl.h>
 #endif
+#ifdef HAVE_LINUX_IOCTL_H
+#include <linux/ioctl.h>
+#endif
 #ifdef HAVE_LINUX_JOYSTICK_H
 #include <linux/joystick.h>
 #define JOYDEV "/dev/js%d"