[AArch64] Scale a frequency factor from the interval #186

Job	Run time
Build on debian-testing amd64	1m 24s
Build on debian-10-buster amd64	56s
Build on ubuntu-rolling amd64	59s
Build on ubuntu-16.04-xenial amd64	49s
Build on ubuntu-14.04-lucid amd64	1m 6s
Build on alpine-latest amd64	49s
Build on debian-testing aarch64	14m 10s
Build on debian-10-buster aarch64	2m 23s
Build on ubuntu-rolling aarch64	5m 11s
Build on ubuntu-16.04-xenial aarch64	2m 8s
Build on ubuntu-14.04-trusty aarch64	2m 40s
Build on alpine-latest aarch64	1m 46s
	34m 21s

Provide feedback