usb: musb: remove unused davinci support

The musb-davinci driver was only used on dm644x, which got removed
in linux-6.0. The only remaining davinci machines are da8xx
devicetree based and do not use this hardware.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20221019152947.3857217-6-arnd@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>