drivers: soc: qcom: Port bam dmux driver

Port bam dmux driver to use qcom smem state mechanism.
Driver uses get/update/register/unregister api from
qcom smem state mechanism.

Change-Id: I3ca53e8624ac3bd3cb7f3144b0995b5be89efefe
Signed-off-by: Prasadarao Durvasula <pdurvasu@codeaurora.org>
Signed-off-by: Sivasri Kumar Vanka <sivasri@codeaurora.org>