Moved the loop check back to a post-loop condition in DSP HLE AX ucode.  This brings DSP HLE in line with DSP LLE and fixes issue 7627.  This effectively reverts ef501137be4a019a18719e1ce802ec42ca68ab03 which is not needed as the loop check is now corrected.
Re-added the acc_end_reached logic for AXWii.
Merge pull request #985 from skidau/dsp-loop-hle

Moved the loop check back to a post-loop condition in DSP HLE AX ucode.