soc: qcom: gladiator_hang: Add support for different ports

Different targets do not always have the same gladiator ports
and the offsets in registers can be different. This patch allows
user to specify different port configurations by using different
compatible strings in the DT.

Change-Id: I0687b1d15ba5b6aac22c526417c2d5828b9d3881
Signed-off-by: Kyle Yan <kyan@codeaurora.org>