cnss2: Update driver to support multiple devices

Currently CNSS2 driver does not support multi chips. This is a update of
the CNSS2 driver to support multi chips with converged dts.

Change-Id: Ie3efb526220c2de21e021320322d46c345d770bc
Signed-off-by: wei yang <yangwei@codeaurora.org>
Signed-off-by: Kuichu Ni <kuichun@codeaurora.org>