lisa.tests.base: Use devlib.trace.dmesg.KernelLogEntry.from_dmesg_output()
lisa.tests.base: Use devlib.trace.dmesg.KernelLogEntry.from_dmesg_output()

Remove some duplication with code that is now in devlib.

ARM-software/lisa,credp/lisa,credp/lisa,ARM-software/lisa,ARM-software/lisa,ARM-software/lisa,credp/lisa,credp/lisa