Some of the platforms (like Tegra194 and Tegra234) have open slots and
not having an endpoint connected to the slot is not an error.
So, changing the macro from dev_err to dev_info to log the event.

Link: https://lore.kernel.org/r/20220913101237.4337-1-vidyas@nvidia.comTested-by: NJon Hunter <jonathanh@nvidia.com>
Signed-off-by: NVidya Sagar <vidyas@nvidia.com>
Signed-off-by: NLorenzo Pieralisi <lpieralisi@kernel.org>
Acked-by: NJon Hunter <jonathanh@nvidia.com>
Acked-by: NManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>