Delimit the read timeout to max 2000 ms by smartreader

Now we are using twe calculated timeout out off icc_async.c . But this timeout is for T0 protocol cards to big. it should be between +- 100 ms up to
+- 1000 ms max. The calculated timout into icc_async.c should be reviewed. It looks like it is about 10 to 15 times two big on T0 cards.

git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@9768 4b0bc96b-bc66-0410-9d44-ebda105a78c1