As a large number of provisioning errors can come from failures
initializing OEMCrypto we need to collect these messages.
Errors and warnings were only printed to the log. This
change takes those messages and puts them into the oemcrypto
intialization mode metric.
"Mode" was chosen as most messages were about how oemcrypto
was initialized (e.g. into L3 because no L1 library was found).
Test: Ran all GTS Media Tests
Bug: 34782934
Change-Id: I1fcdd74c99011d53bdffe9609d2f4c46c222e2f6