Explictly cast size_t into a long data type

This change explictly casts size_t type variables to long data type in
ALOG*, to avoid any build error due to inconsistent size_t type
declarations between different build targets.

Bug: 142545867

Change-Id: I587c7006a6ab69970b3a507a6160b3decd4bfd5a
Signed-off-by: Changyeon Jo <changyeon@google.com>