defconfig: 9625: disable coresight for perf defconfig

Disable CoreSight drivers for perf defconfig to avoid power and
performance penalty. This is also reduce memory utilization.

Disabling CoreSight drivers also results in disabling JTag save
and restore code.

Change-Id: Ia93231b2038ac085da66c934954c950cd9a096d7
Signed-off-by: Pratik Patel <pratikp@codeaurora.org>