logger: Ensure captured log not overwritten

Add additional file path to make copy of captured log.

Bug: 237282212
Test: Verified lastmeal.txt and thismeal.txt existence.
Signed-off-by: George Lee <geolee@google.com>
Change-Id: I77606bf679c3eb1c55f2b135a6265e0e0e837c77
2 files changed