Get rid of __DATE__ use

clang 4.0 warns about __DATE__ resulting in non-reproducable
builds - and we build powertop with -Werror

Change-Id: I872a207b35595bb9f775ee7fc5348a3e99090a30
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>
1 file changed