New function needed to return the GPU memory width in bits

[red-ray]

Both I and a friend have been unable to find a was to read the GPU memory width in bits and suspect that doing this is currently not possible.

Given that NVidia have NvAPI_GPU_GetFBWidthAndLocation() and Intel have zesMemoryGetProperties() to read the memory bus width I feel that ADL should have a way to return this information, please can one be added.

[CPUID2021]

That would indeed be very useful. At the moment we can only hardcode the value in the code, that is not very convenient (and reliable).