defconfig:msm: FIPS feature enablement

Modify msm8994_defconfig to set FIPS_ENABLE value to "y".
This value will enable FIPS mode compilation, and enable FIPS mode
after system boots up.

Made the same modification on msm8994-perf_defconfig.

Change-Id: I85029efe2a02137479d2c6bc4a2538e1ca34bdbf
Acked-by: Jing Deng <jingd@qti.qualcomm.com>
Signed-off-by: Zhen Kong <zkong@codeaurora.org>