include: adi-axi-common: add new helper macros

Add new helper macros and enums to help identifying the platform and some
characteristics of it at runtime.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20250519-dev-axi-clkgen-limits-v6-4-bc4b3b61d1d4@analog.com


Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>