hwmon: (fam15h_power) Use generic power management

Switch to the generic PCI power management framework and remove legacy
.resume() callback. With the generic framework, the
standard PCI related work like:
- pci_save/restore_state()
- pci_enable/disable_device()
- pci_set_power_state()
is handled by the PCI core and this driver should implement only
device specific operations in its respective callback function.

Signed-off-by: Vaibhav Gupta <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Guenter Roeck <[e-mail]>

drivers/hwmon/fam15h_power.c

···
 		REG_TDP_RUNNING_AVERAGE, val);
 }
 
-#ifdef CONFIG_PM
-static int fam15h_power_resume(struct pci_dev *pdev)
+static int fam15h_power_resume(struct device *dev)
 {
+	struct pci_dev *pdev = to_pci_dev(dev);
 	tweak_runavg_range(pdev);
 	return 0;
 }
-#else
-#define fam15h_power_resume NULL
-#endif
+
+static DEFINE_SIMPLE_DEV_PM_OPS(fam15h_power_ops, NULL, fam15h_power_resume);
 
 static int fam15h_power_init_data(struct pci_dev *f4,
 				  struct fam15h_power_data *data)
···
 	.name = "fam15h_power",
 	.id_table = fam15h_power_id_table,
 	.probe = fam15h_power_probe,
-	.resume = fam15h_power_resume,
+	.driver.pm = &fam15h_power_ops,
 };
 
 module_pci_driver(fam15h_power_driver);