UPSTREAM: cbmem: Escape literal asterisks in log banner regex

I had a stupid. :( Asterisks have a special meaning in regexes, but I
just wanted to match three literal ones. This kills the regex parser.

BUG=chromium:729621

Change-Id: Ia6149e72715d651c914583ed3235680ce5b7a2e0
Signed-off-by: Julius Werner <[email protected]>
Original-Reviewed-on: https://review.coreboot.org/20171
Original-Tested-by: build bot (Jenkins) <[email protected]>
Original-Reviewed-by: Aaron Durbin <[email protected]>
Original-Reviewed-by: Philippe Mathieu-Daud <[email protected]>
Reviewed-on: https://chromium-review.googlesource.com/537138
(cherry picked from commit a1d1941d62453658c48912d805c9e6b2e3dc2602)
Reviewed-on: https://chromium-review.googlesource.com/537977
1 file changed