msm: cpu: Add l2 and core initialization sequences for thorium

msmthorium has different power on sequence for its ARM cores,
so add new L2 and cpu core initialization sequences.
And add "qcom,thorium-arm-cortex-acc" method to cpu_ops.

Change-Id: I9964a33b215931646adfdcff2ef400824f1c8e58
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>