staging: vt6656: code cleanup, replaced U32 macro with u32

Removed custom macro for unsigned 32-bit integers.
Signed-off-by: Andres More <more.andres@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/vt6656/device.h

@@ -435,7 +435,7 @@ typedef struct __device_opt {
     int         short_retry;
     int         long_retry;
     int         bbp_type;
-    U32         flags;
+    u32         flags;
 } OPTIONS, *POPTIONS;
 
 
@@ -453,17 +453,17 @@ typedef struct __device_info {
 	struct tasklet_struct       ReadWorkItem;
 	struct tasklet_struct       RxMngWorkItem;
 
-    U32                         rx_buf_sz;
+    u32                         rx_buf_sz;
     int                         multicast_limit;
     BYTE                        byRxMode;
 
     spinlock_t                  lock;
 
-    U32                         rx_bytes;
+    u32                         rx_bytes;
 
     BYTE                        byRevId;
 
-    U32                         flags;
+    u32                         flags;
     ULONG                       Flags;
 
     SCache                      sDupRxCache;

drivers/staging/vt6656/ttype.h

@@ -79,8 +79,6 @@ typedef int             BOOL;
 
 typedef signed char             I8;     /* 8-bit signed integer */
 
-typedef unsigned long           U32;    /* 32-bit unsigned integer */
-
 typedef char            CHAR;
 typedef signed short    SHORT;
 typedef signed int      INT;