Changeset 9736:a40008d23a51
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config: Remove redundant default clocks

This patch removes the clocks of certain instances of CoherentBus,
NonCoherentBus and IOCache where the specified clock is same as the
default value of the system clock. As all the values used are the defaults,
there are no performance changes. There are similar cases where the
toL2Bus is set to use the parent CPU clock which is already the
default behaviour.

The main motivation for these simplifications is to ease the
introduction of clock domains.

All regressions pass without any changes