build-unit-test-docker: Consolidate make invocations
build-unit-test-docker: Consolidate make invocations

Consistency fix

Change-Id: I8f27123010eb139b2e68267623d95f22faa2d3a1
Signed-off-by: William A. Kennington III <30fff5198f4d10ca1117e5f3ec82f3b4b8900d81@google.com>

openbmc/openbmc-build-scripts,openbmc/openbmc-build-scripts