package/brltty: fix input_event related compile failure

package/brltty: fix input_event related compile failure

Add a patch to fix input_event time related compile failure. The problem
is reported and fixed upstream.

Fixes:
http://autobuild.buildroot.net/results/7c5278c0ff2b2d8f88803e256803b31a75904efe/build-end.log

./system_linux.c: In function 'writeInputEvent':
./system_linux.c:962:23: error: 'struct input_event' has no member named 'time'; did you mean 'type'?
   gettimeofday(&event.time, NULL);
                       ^~~~
                       type

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>