cmn600: Fix incorrect cache group count calculation

Merged Darryl Green requested to merge github/fork/CJKay/cmn600-hnf-cache-group-bugfix into master

Created by: CJKay

The CMN-600 module currently incorrectly calculates the HN-F cache group count for HN-F counts less than the number of HN-F entries per HN-F cache group.

Change-Id: If840a78b8b70b1eb8b2b77768f4e95c0d8c369b3 Signed-off-by: Chris Kay

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