Cross Reference: /system/extras/mmap-perf

`Name`	`Date`	`Size`
Up to higher level directory
`Android.mk`	05-Oct-2017	`1K`
`mmapPerf.cpp`	05-Oct-2017	`4.4K`
`NOTICE`	05-Oct-2017	`10.4K`
`unsupported.cpp`	05-Oct-2017	`126`