cnss2: Support unified QMI sequence

Unified QMI sequence creates a common sequence that can be used by
firmware and host driver among various devices. It will help reduce
maintenance effort and enhance scalability. Add the support for it
to CNSS2 driver.

Change-Id: Ia8b20f185bd9ecc4b7866aa2df62318b981e93f5
Signed-off-by: Yue Ma <yuem@codeaurora.org>