memory: ti-aemif: remove platform data support

There are no longer any users of the ti-aemif driver that set up platform
data from board files. We can shrink the driver by removing support for
it.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20240809-ti-aemif-v1-1-27b1e5001390@linaro.org


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>