There's really no point in doing all that
initcall trickery when we can safely let
udev handle module probing for us.

Remove all of that trickery, by moving everybody
to module_init() and making proper use of
platform_device_register() rather than
platform_device_probe().
Tested-by: NRajashekhara, Sudhakar <sudhakar.raj@ti.com>
Tested-by: NTasslehoff Kjappfot <tasskjapp@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>