cros-camera-libcbm: Fix executable name

Fixes the executable name. It should be "cbm_test".

BUG=b:177303656
TEST=FEATURES=test emerge-eve cros-camera-libcbm

Cq-Depend: chromium:2626563
Change-Id: I1995c7bd6f68ab06cff6baf672a8edc7f9fb620e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2626703
Tested-by: Jasmine Chen <lnishan@google.com>
Reviewed-by: Shik Chen <shik@chromium.org>
Commit-Queue: Jasmine Chen <lnishan@google.com>
1 file changed