power_status: Corrected logging string concatenation

The string concatenation in the thermal reading script is wrong, it did
not convert int to string before printing it out.

BUG=chromium-os:13866
TEST=Run a power test in http://codereview.chromium.org/6800002
Check for temperature reading in the debug log.

Change-Id: Ie2f56e52d29246f432bcc48dd0ff2cc3a1b3fe84
Signed-off-by: Simon Que <sque@chromium.org>

Review URL: http://codereview.chromium.org/6823014
1 file changed