tree fd37c1906787661faf0d4356e546a9b3787fb0b0
parent 39cab7cd2538b0f31b3672c71195c47ba3b00de9
author Josh Gao <jmgao@google.com> 1527827054 -0700
committer Josh Gao <jmgao@google.com> 1527883549 -0700

fastboot: fix USB_TRACE, make it better.

Fix some bit-rotten instances of printf("%d", size_t), add more
logging for device selection.

Test: fastboot.exe devices
Change-Id: I4683fab8f88805e1ac88e193a1e84821be8bfa4c