i2c: smbus: Use device_*() functions instead of of_*()

[ Upstream commit a263a840 ]

Change of_*() functions to device_*() for firmware agnostic usage.
This allows to have the smbus_alert interrupt without any changes
in the controller drivers using the ACPI table.

Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Stable-dep-of: 8d3cefaf ("i2c: core: Lock address during client device instantiation")
Signed-off-by: Sasha Levin <sashal@kernel.org>