Fixed implicit declaration of SDL_Log() warning in joystick source for Android.
diff --git a/src/joystick/android/SDL_sysjoystick.c b/src/joystick/android/SDL_sysjoystick.c
index 673c62a..3d5aa32 100644
--- a/src/joystick/android/SDL_sysjoystick.c
+++ b/src/joystick/android/SDL_sysjoystick.c
@@ -35,6 +35,7 @@
#include "SDL_hints.h"
#include "SDL_assert.h"
#include "SDL_timer.h"
+#include "SDL_log.h"
#include "SDL_sysjoystick_c.h"
#include "../SDL_joystick_c.h"
#include "../../core/android/SDL_android.h"