arm64: defconfig: Enable the QCOM SCM driver

Enable the Qualcomm Secure Channel Manager (SCM) driver for
Lahaina platform in order to communicate with the secure
world.

Change-Id: I691b2f4c41f08074aef313bc176b80d06f969274
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>