wcnss: get MUX control before dumping IRIS register

Sometimes dumping IRIS register along with PRONTO register
results in crash.
To mitigate issue get MUX control before dumping IRIS register.

Change-Id: Ie1e19a254ec1ae43c2713c86c4d35a2d9968bcd6
CRs-Fixed: 777663
Signed-off-by: Anand N Sunkad <asunka@codeaurora.org>
3 files changed