staging: vc04_services: interface: vchi: Correct long line comments and make them C89 style

Correct long lines of comments to respect 80 character per line
limit and make them C89 style one.
Found using checkpatch.pl.
Signed-off-by: R Veera Kumar <vkor@vkten.in>
Link: https://lore.kernel.org/r/20200320024337.4754-1-vkor@vkten.inSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vc04_services/interface/vchi/vchi_common.h

@@ -33,10 +33,14 @@ enum vchi_crc_control {
 enum vchi_callback_reason {
 	VCHI_CALLBACK_REASON_MIN,
 
-	//This indicates that there is data available
-	//handle is the msg id that was transmitted with the data
-	//    When a message is received and there was no FULL message available previously, send callback
-	//    Tasks get kicked by the callback, reset their event and try and read from the fifo until it fails
+	/*
+	 * This indicates that there is data available handle is the msg id that
+	 * was transmitted with the data
+	 * When a message is received and there was no FULL message available
+	 * previously, send callback
+	 * Tasks get kicked by the callback, reset their event and try and read
+	 * from the fifo until it fails
+	 */
 	VCHI_CALLBACK_MSG_AVAILABLE,
 	VCHI_CALLBACK_MSG_SENT,
 	VCHI_CALLBACK_MSG_SPACE_AVAILABLE, // XXX not yet implemented
@@ -51,9 +55,11 @@ enum vchi_callback_reason {
 
 	VCHI_CALLBACK_SERVICE_CLOSED,
 
-	// this side has sent XOFF to peer due to lack of data consumption by service
-	// (suggests the service may need to take some recovery action if it has
-	// been deliberately holding off consuming data)
+	/*
+	 * this side has sent XOFF to peer due to lack of data consumption by
+	 * service (suggests the service may need to take some recovery action
+	 * if it has been deliberately holding off consuming data)
+	 */
 	VCHI_CALLBACK_SENT_XOFF,
 	VCHI_CALLBACK_SENT_XON,
 
@@ -112,12 +118,16 @@ struct vchi_msg_vector {
 	int32_t vec_len;
 };
 
-// Iterator structure for reading ahead through received message queue. Allocated by client,
-// initialised by vchi_msg_look_ahead. Fields are for internal VCHI use only.
-// Iterates over messages in queue at the instant of the call to vchi_msg_lookahead -
-// will not proceed to messages received since. Behaviour is undefined if an iterator
-// is used again after messages for that service are removed/dequeued by any
-// means other than vchi_msg_iter_... calls on the iterator itself.
+/*
+ * Iterator structure for reading ahead through received message queue.
+ * Allocated by client, initialised by vchi_msg_look_ahead. Fields are for
+ * internal VCHI use only.
+ * Iterates over messages in queue at the instant of the call to
+ * vchi_msg_lookahead - will not proceed to messages received since.
+ * Behaviour is undefined if an iterator is used again after messages for that
+ * service are removed/dequeued by any means other than vchi_msg_iter_...
+ * calls on the iterator itself.
+ */
 struct vchi_msg_iter {
 	struct opaque_vchi_service_t *service;
 	void *last;