Add GCM to algorithms tested in CTS

This change adds all combinations of GCM algorithms, ensuring proper
support, config flags, and data accounting. Algorithm for calculating
size of packets has also been made more generic to allow for calculation
based on different encryption algorithms.

Bug: 73261868
Test: This
Change-Id: Ib77ac237fee75415223f0291cecc0b60ce76b77f
1 file changed
tree: d866b10857636f28d8c8089a95e06b498747930f
  1. tests/