nvmem: qcom-spmi-sdam: register at device init time

There are currently no in-tree users of the Qualcomm SDAM nvmem driver
and there is generally no point in registering a driver that can be
built as a module at subsys init time.

Register the driver at the normal device init time instead and let
driver core sort out the probe order.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230206134356.839737-21-srinivas.kandagatla@linaro.org


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