qcacld-3.0: Fix DSC documentation

The kernel-doc script identified a few documentation issues in
components/dsc, so fix them.

Change-Id: I5e2f4464abb7c94ec567c864c573d314d319ea37
CRs-Fixed: 3356932

components/dsc/inc/wlan_dsc_driver.h

@@ -26,7 +26,7 @@
 
 #include "qdf_status.h"
 
-/**
+/*
  * struct dsc_driver - opaque dsc driver context
  */
 struct dsc_driver;

components/dsc/inc/wlan_dsc_psoc.h

@@ -27,7 +27,7 @@
 #include "qdf_status.h"
 #include "wlan_dsc_driver.h"
 
-/**
+/*
  * struct dsc_psoc - opaque dsc psoc context
  */
 struct dsc_psoc;

components/dsc/inc/wlan_dsc_vdev.h

@@ -27,7 +27,7 @@
 #include "qdf_status.h"
 #include "wlan_dsc_psoc.h"
 
-/**
+/*
  * struct dsc_vdev - opaque dsc vdev context
  */
 struct dsc_vdev;