Use the wrapper function for getting the driver data using pci_dev
instead of using dev_get_drvdata() with &pdev->dev, so we can directly
pass a struct pci_dev.  This is a purely cosmetic change.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NTejun Heo <tj@kernel.org>