qcom: clock-cpu-8994: Add support to bringup A57 clocks before probe

smp_init runs before the clock-cpu-8994 driver has had a chance
to probe, but the A57 clocks need to be setup before smp_init runs.

To allow this, setup the A57 clocks in an early_initcall function.

Change-Id: Ib5c7f180b09120f2d7dbf63937765bec860d8ab0
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>