Silence broken print about chip/fw info

- This print does some shady stuff with printing out a u8 array as a
string, that causes some terminals to stop accepting input. Probably no
null byte in what it was expecting to print, so it overruns for a while
spewing garbage.

Change-Id: I71aa3dd3c9ea4f4d65860a7a0079f5751d6613c2