tools/power turbostat: Fix incorrect format variable

tools/power turbostat: Fix incorrect format variable

[ Upstream commit 23cb4f5c81766e70e5f32ed0987ee8fb5ab2e00a ]

In the perf thread, core, and package counter loops, an incorrect
'mp->format' variable is used instead of 'pp->format'.

[lenb: edit commit message]
Fixes: 696d15cbd8c2 ("tools/power turbostat: Refactor floating point printout code")
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>