fftools: Fix MediaCodec on Android15+

On Android15+ MediaCodec HAL backend was switched from HIDL to AIDL.
As a result, MediaCodec operations started to hang, see:

    https://trac.ffmpeg.org/ticket/11363
    https://github.com/termux/termux-packages/issues/21264
    https://issuetracker.google.com/issues/382831999

To fix that it is necessary to initialize binder thread pool.

Signed-off-by: Dmitrii Okunev <xaionaro@dx.center>

fftools/ffmpeg.c

@@ -78,6 +78,9 @@
 #include "libavdevice/avdevice.h"
 
 #include "cmdutils.h"
+#if CONFIG_MEDIACODEC
+#include "compat/android/binder.h"
+#endif
 #include "ffmpeg.h"
 #include "ffmpeg_sched.h"
 #include "ffmpeg_utils.h"
@@ -1019,6 +1022,10 @@ int main(int argc, char **argv)
         goto finish;
     }
 
+#if CONFIG_MEDIACODEC
+    android_binder_threadpool_init_if_required();
+#endif
+
     current_time = ti = get_benchmark_time_stamps();
     ret = transcode(sch);
     if (ret >= 0 && do_benchmark) {