libosmo-simtrace2 traditionally had only supported blocking, synchronous
I/O, while other osmocom programs such as remsim-client used
asynchronous USB I/O.
Using async USB I/O for IRQ + IN transfers while using blocking I/O for
OUT transfers doesn't seem to work reliably, so we have to offer a way
to perform the OUT transfers generated within libosmo-simtrace2 in async
mode.
Change-Id: Ib8939bdb7f533cd20a34a30a97f12b782b9816c2
In Change-Id I7cdd3f9171dbed45de0089defe29d2b59044bd84 we introduced
firmware support for SIMTRACE_MSGT_BD_CEMU_CONFIG. The respective
host part was so far only implemented in osmo-remsim-client-st2,
but not in libosmo-simtrace2. Let's fix that.
Change-Id: Ia4822d360a271d2ce9725f761cb95de58663ac3b
