perf diff: Move columns into struct data__file

Another step towards multiple data files support. Having columns
definition within struct data__file force each data file having its own
columns.

Signed-off-by: Jiri Olsa <[email protected]>
Reviewed-by: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Corey Ashford <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

0 files changed, 0 insertions, 0 deletions