usb-storage: fix realtek cr configuration

commit 839f245f upstream.

A typo in the configuration variable name prevents from activating the
USB autosuspend on the device.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/storage/Kconfig

@@ -42,7 +42,7 @@ config USB_STORAGE_REALTEK
 
 config REALTEK_AUTOPM
 	bool "Realtek Card Reader autosuspend support"
-	depends on USB_STORAGE_REALTEK && CONFIG_PM_RUNTIME
+	depends on USB_STORAGE_REALTEK && PM_RUNTIME
 	default y
 
 config USB_STORAGE_DATAFAB