Replace open coded parsing of CPU nodes 'reg' property with
of_get_cpu_hwid().
Cc: Florian Fainelli <f.fainelli@xxxxxxxxx>
Cc: Ray Jui <rjui@xxxxxxxxxxxx>
Cc: Scott Branden <sbranden@xxxxxxxxxxxx>
Cc: bcm-kernel-feedback-list@xxxxxxxxxxxx
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>