coresight-tmc-etr: Add QDSS IPA bam connection support

Add QDSS IPA bam connection support for pcie hw transfer path. And
add support to switch between pcie sw and hw path.

Change-Id: Idbd6f9e2a869fabfa0a23a834b1cbd7945cf93f4
Signed-off-by: Mao Jinlong <jinlmao@codeaurora.org>
Signed-off-by: Yuanfang Zhang <zhangyuanfang@codeaurora.org>