nvme: add platform driver registration

After the common code is detached from the PCI specific
ones, add a parallel part for platform_driver registration.

Keep it in the same file for the moment to allow rebasing,
it can be split into multiple modules later on.

This is completely untested and probably does not work.

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