NFC / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM

After commit b2b49ccb (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is
selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks
depending on CONFIG_PM_RUNTIME may now be changed to depend on
CONFIG_PM.

Replace CONFIG_PM_RUNTIME with CONFIG_PM in drivers/nfc/trf7970a.c.
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/nfc/trf7970a.c

@@ -2154,7 +2154,7 @@ static int trf7970a_resume(struct device *dev)
 }
 #endif
 
-#ifdef CONFIG_PM_RUNTIME
+#ifdef CONFIG_PM
 static int trf7970a_pm_runtime_suspend(struct device *dev)
 {
 	struct spi_device *spi = container_of(dev, struct spi_device, dev);