spi: axi-spi-engine: use adi_axi_pcore_ver_gteq()

Make use of the adi_axi_pcore_ver_gteq() helper to make version checks
more readable and robust against a major version bump.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20250815-spi-axi-spi-enigne-improve-version-checks-v1-2-13bde357d5b6@baylibre.com


Signed-off-by: Mark Brown <broonie@kernel.org>