ARM: dts: msm: Enable TZ-log driver for SM6150

Enable TZ-log device node on include file to enable
the TZ-log driver on sdm450 to access TZ diag area.

Change-Id: I043a5c3d9c0f8e96f936200d803a7f8f9feb57d3
Signed-off-by: Mohamed Sunfeer <msunfeer@codeaurora.org>