cpufreq: interactive: only boost tunable affected cpus

It is not correct to boost all the cpus when tunable boost
parameters are changed. It also does not need to boost the
cpus which is already boosted.

Change-Id: Ic502ab093e1858b3a4b9f6b573da54364a69612e
Signed-off-by: Lianwei Wang <a22439@motorola.com>
Git-commit: 805863ee7ef93d05cd654e069f5d7f00a0f4b257
Git-repo: https://android.googlesource.com/kernel/common.git


[imaund@codeaurora.org: Resolved context conflicts]
Signed-off-by: Ian Maund <imaund@codeaurora.org>