soc: swr-mstr: remove soundwire state check in interrupt handler

when triggering SSR during speaker playback and insert headset,
headset insertion/removal IRQ don't reach soundwire master side.
Remove soundwire state check in interrupt handler to resolve headset
detection issue.

Change-Id: If6ff9aaaab9513f713d6106913dfccbc0e75e385
Signed-off-by: Meng Wang <mengw@codeaurora.org>