dsp: q6core: Check q6core avs state to be modules ready

During PDR, in dynamic load module if attempted
before all module state ready on AVS it may fail.
Add AVS state check before send load module cmd.

Change-Id: I70a5a5b11f5661042d704222759608179ba9d47c
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>