defconfig: msm8974: add perf defconfig for 8974

New configuration for 8974 to disable debugging options for
performance.

Change-Id: I6877a49ce76dc432cf62e74a9dc6a9508db5db3f
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
1 file changed