soc: qcom: xport_bgcom: Modify string check in bgcom_suspend

Glink_bgcom_suspend function compares the edge string with "bgcom".
Which is wrong value, as it should be "bg".

Modified the string to be compared to as "bg".

Change-Id: I5a6efe1e7cce261e9a42178b3a51cfc36d17e9de
Signed-off-by: Dhoat Harpal <hdhoat@codeaurora.org>