ARM: dts: msm: Enable CPU scaling support for msmtellurium

We have two clusters and they support different frequencies.
Use separate frequency table for both.

Tellurium cpu clock tree matches with 8939. Hence reuse 8939
driver.

Also document the compatible string.

Change-Id: Ic0e32c73072820db01404d6766d889b30107ca6d
Signed-off-by: Arun KS <arunks@codeaurora.org>