staging: logger: hold mutex while removing reader
staging: android: logger: clarify non-update of w_off in do_write_log_from_user
staging: android: logger: clarify code in clock_interval
staging: android: logger: reorder prepare_to_wait and mutex_lock
staging: android: logger: simplify and optimize get_entry_len
staging: android: logger: Change logger_offset() from macro to function
Staging: android: fixed white spaces coding style issue in logger.c
android: logger: bump up the logger buffer sizes
