msm: kgsl: Add back power tracepoints to gmu and rgmu targets

This ensures compatibility with existing tools that rely on the important
power related tracepoints. Only need to print the tracepoints and no
need to modify the states.

Change-Id: I87432aff998cb21a22452a152bd5e6b8f59c0f75
Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>