* when tested with [1], even after exiting the app, spm was
still active in powerhal thereby keeping max freqs limited
and blocking boosts
* enable/disable it properly and end all other hints before
enabling, to fix this issue
* while we're at it, don't handle max freq for anything other
than spm in powerhint
[1] https://android.googlesource.com/platform/cts/+/refs/heads/master/hostsidetests/sustainedperf
Change-Id: I6e37dfa7ffab0137d70cb5ba5d1b156133416062
Signed-off-by: Adithya R <gh0strider.2k18.reborn@gmail.com>
431daebc40