mei: fix the KDoc formating

KDoc function section start with double start:  /** instead of /*

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index 6d7c188..e7b7aad 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -281,7 +281,7 @@
 	return 0;
 }
 
-/*
+/**
  * mei_hbm_enum_clients_req - sends enumeration client request message.
  *
  * @dev: the device structure
@@ -314,7 +314,7 @@
 	return 0;
 }
 
-/*
+/**
  * mei_hbm_me_cl_add - add new me client to the list
  *
  * @dev: the device structure
@@ -569,7 +569,7 @@
 	return 0;
 }
 
-/*
+/**
  * mei_hbm_pg - sends pg command
  *
  * @dev: the device structure