Staging: hv: Move the definition of the function put_stor_device()

In preparation for further cleaning up storvsc.c move the definition
of the inline function put_stor_device() from storvsc.c to
storvsc_api.h.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/hv/storvsc_api.h b/drivers/staging/hv/storvsc_api.h
index 4e66507..d46b4de 100644
--- a/drivers/staging/hv/storvsc_api.h
+++ b/drivers/staging/hv/storvsc_api.h
@@ -152,6 +152,16 @@
 	return stor_device;
 }
 
+
+static inline void put_stor_device(struct hv_device *device)
+{
+	struct storvsc_device *stor_device;
+
+	stor_device = (struct storvsc_device *)device->ext;
+
+	atomic_dec(&stor_device->ref_count);
+}
+
 /* Interface */
 int stor_vsc_on_host_reset(struct hv_device *device);