qdss_bridge: fix NULL usb_ch of usb_qdss_close

Status of "opened" ENABLE cannot guarantee that usb_ch is not NULL when
calling usb_qdss_openfailed, this change modifies status of "opened" to
"DISABLE" when calling usb_qdss_open failed.

Change-Id: I2a1f30d0cfbbd2abef74d9c476f863f172cc1d08
Signed-off-by: Yuanfang Zhang <zhangyuanfang@codeaurora.org>