Transceiver52M: Verify global config sanity before using

The configuration table is instantiated as a global variable with
no means to check constructor status. This means various types
of database failure conditions (e.g. file existence, permissions,
etc.) are not reported. This patch performs a small number of
checks to make sure that the configuration is sane.

Signed-off-by: Thomas Tsou <tom@tsou.cc>
1 file changed