msm: npu: update performance mode during load network

It's necessary to update performance mode during loadnetwork to
set npu to proper power level if fw doesn't support dcvs mode.

Change-Id: I9cf690fd241da35c8729af193baa8d9d4e6cd0dd
Signed-off-by: Jilai Wang <jilaiw@codeaurora.org>