common: add rma_auth console command
common: add rma_auth console command

The new console command uses the alternative TPM command execution
path to generate the RMA challenge and also allows to verify the RMA
authentication code.

This patch also limits the rma challenge/auth code printouts to images
supporting debug features (built with CR50_DEV=1), and limits the code
included when building test images.

BRANCH=cr50
BUG=b:67008109
TEST=while running TCG tpm test ran the new console command multiple
     times, observed all tests pass and the command always succeed.

Change-Id: I9ca3e86040d8adbdbe70f33cf2b317075f823f36
Signed-off-by: Vadim Bendebury <5515d6d2d0829cbe0dd0dcf2094aaded06d58514@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/699524
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec