soc: qcom: bgcom: Add suspend resume to aligned to SPI pm

Adds pm suspend resume call backs to be aligned with SPI driver.

Change-Id: I057c2d5f74b3c39c58647a0ea594d4d667644271
Signed-off-by: Arjun Singh <arsingh@codeaurora.org>
Signed-off-by: Ramesh Yadav Javadi <javadi@codeaurora.org>