Adds an aport for unixbench and a wrapper so it can be started with
ubench without requiring write permissions in /usr. To launch the
benchmark on a phone and have it finish in a reasonable amount of time:
$ ubench dhry whets
Output on an i7-7700HQ in the pmbootstrap chroot:
Dhrystone 2 using register variables 146273178.2 lps (10.0 s, 7 samples)
Double-Precision Whetstone 44390.3 MWIPS (9.7 s, 7 samples)
System Benchmarks Partial Index BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 146273178.2 12534.1
Double-Precision Whetstone 55.0 44390.3 8071.0
========
System Benchmarks Index Score (Partial Only) 10057.9
This is a neat way to get relative performance between devices and
testing performance for upstream/downstream kernels.
