drivers: mspi: mspi_dw: support newer IP revisions

Bitmask offsets for the MSPI_DW peripheral are incorrect for the
4.03a databook for the DW APB SSI. Add a "v2" compatible to handle these
changed offsets. The compatible does not define new binding properties,
just modifies the register offsets.

Additionally, handle writing the DFS32 mask for v2 of this compatible,
as newer IP supports a dataframe size up to 32 bits.

Signed-off-by: Daniel DeGrasse <ddegrasse@tenstorrent.com>