ARM: davinci: Drop unused includes

of_platform.h include is not needed, so drop it. It implicitly includes
of.h (for now) which is needed.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20230823165637.2466480-1-robh@kernel.org


Signed-off-by: Arnd Bergmann <arnd@arndb.de>