In the general move to have i2c_new_*_device functions which return
ERR_PTR instead of NULL, this patch converts i2c_new_probed_device().

There are only few users, so this patch converts the I2C core and all
users in one go. The function gets renamed to i2c_new_scanned_device()
so out-of-tree users will get a build failure to understand they need to
adapt their error checking code.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NLuca Ceresoli <luca@lucaceresoli.net>
Reviewed-by: NMax Staudt <max@enpas.org>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>