SHARC-21364 is now passing audio

Today I resolved the License issue with Analog Devices Tech Support and passed audio through the new board

Samples (24-bit) are now being read in 32-bit registers (hardware register size is adjustable up to 32-bits). This preserves the sign of the samples at the hardware level.

Seperated left and right channels.

Implemented a circular delay line.

Circular delay line counter isn't incrementing. Will debug this to get the delay line working.