logreader: stricter typing
Add typing annotations to logreader.py and verify it with stricter mypy settings. [Backport commit b00a72f9.] Signed-off-by:Vincent Stehlé <vincent.stehle@arm.com>
Add typing annotations to logreader.py and verify it with stricter mypy settings. [Backport commit b00a72f9.] Signed-off-by:Vincent Stehlé <vincent.stehle@arm.com>