net: tsec: Fix CamelCase issues around BD code

Fix bufPtr and the rxIdx/ txIdx occurrences to
solve the related checkpatch warnings for the
coming patches.

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>

include/tsec.h

@@ -202,14 +202,14 @@ typedef struct txbd8
 {
 	ushort	     status;	     /* Status Fields */
 	ushort	     length;	     /* Buffer length */
-	uint	     bufPtr;	     /* Buffer Pointer */
+	uint	     bufptr;	     /* Buffer Pointer */
 } txbd8_t;
 
 typedef struct rxbd8
 {
 	ushort	     status;	     /* Status Fields */
 	ushort	     length;	     /* Buffer Length */
-	uint	     bufPtr;	     /* Buffer Pointer */
+	uint	     bufptr;	     /* Buffer Pointer */
 } rxbd8_t;
 
 typedef struct rmon_mib