RDMA/cm: Correct typedef and bad line warnings

In include/rdma/ib_cm.h:

Correct a typedef's kernel-doc notation by adding the 'typedef' keyword
to it to avoid a warning.
Add a leading " *" to a kernel-doc line to avoid a warning.

Warning: ib_cm.h:289 function parameter 'ib_cm_handler' not described
in 'int'
Warning: ib_cm.h:289 expecting prototype for ib_cm_handler(). Prototype
was for int() instead
Warning: ib_cm.h:484 bad line: connection message in case duplicates
are received.

Signed-off-by: Randy Dunlap <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Leon Romanovsky <[e-mail]>

include/rdma/ib_cm.h

···
 #define CM_APR_ATTR_ID		cpu_to_be16(0x001A)
 
 /**
- * ib_cm_handler - User-defined callback to process communication events.
+ * typedef ib_cm_handler - User-defined callback to process communication events.
  * @cm_id: Communication identifier associated with the reported event.
  * @event: Information about the communication event.
  *
···
 
 /**
  * ib_prepare_cm_mra - Prepares to send a message receipt acknowledgment to a
-     connection message in case duplicates are received.
+ *   connection message in case duplicates are received.
  * @cm_id: Connection identifier associated with the connection message.
  */
 int ib_prepare_cm_mra(struct ib_cm_id *cm_id);