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Update the performance levels per the latest clock plan. Voltages
remain conservatively high until hardware characterization is done.
For similar reasons, the max frequency for the CPUs is limited to
1036.8MHz, and the max for the L2 cache to 806.4MHz.

Change-Id: I0909a8c0e060715c4c8eaa0ec43bbe9dd7eaf72f
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>