libdot/hterm: fix python-3 print func handling
libdot/hterm: fix python-3 print func handling

Use a print function to work with py2 & py3.

Change-Id: I50ae88d31dd47e846fa4ffac89f392dce2218ec1
Reviewed-on: https://chromium-review.googlesource.com/1018921
Reviewed-by: Vitaliy Shipitsyn <6f51537d61e46a00bf958b60dbef5b5870c2bf22@google.com>
Tested-by: Mike Frysinger <8f3f75c74bd5184edcfa6534cab3c13a00a2f794@chromium.org>

chromium/hterm,chromium/hterm,chromium/hterm,chromium/hterm