dsp: sleep before sending q6core ready query
After PDR, audio avs services still are initializing state.
Avoid sending q6core command after PD up event immediately,
wait for sometime before sending the q6core ready command.
Change-Id: Ibee38db9ee1a30b7852da3d08cac7b0d06371733
Signed-off-by: Laxminath Kasam <[email protected]>