defconfig: msm: disable CoreSight ETM support for msmcobalt

Disable CoreSight ETM and remote ETM configuration for perf defconfig.
ETM configuration requires jtag save and restore configuration to be
enabled which requires QDSS core clock to be on all the time.

Change-Id: I57019e9b6be7f9020eed3cf730bf5b37ea4a1f98
Signed-off-by: Shashank Mittal <mittals@codeaurora.org>