msm: cvp: Allow re-send DSP HFI queue after SSR

Add new DSP state, DSP_INACTIVE, to indicate when CPU driver
shutdown DSP during SSR. The state helps CPU driver differentiate
DSP state between initial CVP boot up vs CVP restarted.

Change-Id: I0fd03efcecfceb38716b254a6725fb67bb969806
Signed-off-by: George Shen <sqiao@codeaurora.org>