tz: Add apq_device_tz_log device on 8064.

apq_device_tz_log is a debugfs module that displays
the contents of a buffer located in IMEM.  The contents
hold diagnostic information logged in by modules running
in secure domain.

This patch enables this tz_log debugfs module for 8064
target devices.

Change-Id: I5e4099735434ed500590fb093d6f675b9d4dd814
Signed-off-by: Ramesh Masavarapu <rameshm@codeaurora.org>