Update the values reported in the ppc64_cpu --frequency output to be displayed to three digits of precision instead of two.
Update the values reported in the ppc64_cpu --frequency output to
be displayed to three digits of precision instead of two.

This update to help with test teams that are making this update to their
code base already so as to get this precision in the reporting.

Signed-off-by: Nathan Fontenot <4b7bfe500077bf77c5456931a34b0b70e36e0bc6@linux.vnet.ibm.com>

mdroth/powerpc-utils,tyreld/powerpc-utils,leitao/powerpc-ibm-utils-debian,tyreld/powerpc-utils,shenki/powerpc-utils,kamalesh-babulal/powerpc-utils,kamalesh-babulal/powerpc-utils,leitao/powerpc-ibm-utils-debian,tyreld/powerpc-utils,mdroth/powerpc-utils,shenki/powerpc-utils,kamalesh-babulal/powerpc-utils,shenki/powerpc-utils,mdroth/powerpc-utils,leitao/powerpc-ibm-utils-debian