Allow PE Masters to have any valid AXI Data Width

The data width of PE masters is currently limited to either 32 or 64 bit. Considering that most platforms outside of Zynq have much broader memory controllers it is beneficial to support all valid AXI Data Widths up to 1024 bits. This might also be relevant for Zynq platforms if the designer of a PE wants to keep their logic simple and rely on data width converters to interface with the memories correctly.