Convert to the device-managed version of spmi_controller_add() and delete the unnecessary driver remove callback. Signed-off-by: Fei Shao <fshao@chromium.org> Link: https://lore.kernel.org/r/20230824104101.4083400-5-fshao@chromium.org Signed-off-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20231206231733.4031901-7-sboyd@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>