evita: Fix power_profile.xml overlay

Right now tons of the values are set to really weird, completely
wrong values. These new values are from mako's overlay, and from
the msm8960 kernel's cpu clock file.

PS2: remove duplicate screen.full value

Change-Id: I9c8922a0701da516cdb699a20e6dfa72cd6f2d38
Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>
evita: Update README

Change-Id: Ifc55cb626e6d4a455c9377fde51300be09e8c1c8
Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>