Trusty: Use bold instead of white_bold in colored log am: fc54d4d8d5

Original change: https://android-review.googlesource.com/c/trusty/vendor/google/aosp/+/2986350

Change-Id: I00ae278d44c802cece8cf449c1b298e5ae81e280
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>