Revert "Revert "i.MX25 GPT clock fix: ensure correct the clock source""

This reverts commit 89f03a8d0bbeaf8d46cfe6da25595eaa67a70df4.
Revert "Revert "mutex: Make more scalable by doing less atomic operations""

This reverts commit 72776ff4e73a9ebde8a7996b19944f57ad3ecd7f.
Revert "Revert "ashmem: fix deadlock when system is low on memory""

This reverts commit 8744cea49ca8c66a4977368621a4f6bd41b553fa.
Revert "Revert "Disable GENTLE_FAIR_SLEEPERS for moar performance""

This reverts commit 16e94530f038fce50cd47ecf0e6e6f0e6cb2cb15.