This updates Kabylake audio dsp firmware to latest version.

The version of this firmware release is 9.21.00.2630_97

The md5sum of this firmware binary is 4477c28fffa3344764d67788095dcc1c
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>