Fix PRIu64 definition to llu.

Previous CL http://codereview.chromium.org/5634003 has a typo.
PRIu64 should be "llu" instead of "ll".

BUG=None
TEST=Build successfully and run with u-boot and verify that outputs with PRI

Change-Id: I960c422ed0446463d5fed5ac4a12f7728ddbb53b

Review URL: http://codereview.chromium.org/5687001
2 files changed