Update the Mcc Table for Canada.

Changing the mnc length from 2 to 3.  We don't have any canandian APNs with 2 digit mncs
and wikipedia doesn't list any canadian carriers with 2 digit mncs.

Rogers was reporting some sims with 72 and others with the correct 720 - a sample "72" sim
didn't have the mnc-length field set so we went with 2.  With this fix all rogers sims will
be picked up correctly.