libertas: rename and re-type bufvirtualaddr to cmdbuf

Make it a struct cmd_header, since that's what it is, and clean up
the places that it's used.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/defs.h b/drivers/net/wireless/libertas/defs.h
index 04db6af..9b98ae7 100644
--- a/drivers/net/wireless/libertas/defs.h
+++ b/drivers/net/wireless/libertas/defs.h
@@ -132,8 +132,8 @@
 */
 
 #define MRVDRV_MAX_MULTICAST_LIST_SIZE	32
-#define MRVDRV_NUM_OF_CMD_BUFFER        10
-#define MRVDRV_SIZE_OF_CMD_BUFFER       (2 * 1024)
+#define LBS_NUM_CMD_BUFFERS             10
+#define LBS_CMD_BUFFER_SIZE             (2 * 1024)
 #define MRVDRV_MAX_CHANNEL_SIZE		14
 #define MRVDRV_ASSOCIATION_TIME_OUT	255
 #define MRVDRV_SNAP_HEADER_LEN          8