net/macb: add AT91RM9200 specific registers and bits to header

#define MACB_NCR				0x0000

#define MACB_NCFGR				0x0004

#define MACB_NSR				0x0008

#define MACB_TAR				0x000c /* AT91RM9200 only */

#define MACB_TCR				0x0010 /* AT91RM9200 only */

#define MACB_TSR				0x0014

#define MACB_RBQP				0x0018

#define MACB_TBQP				0x001c

#define MACB_RTY_SIZE				1

#define MACB_PAE_OFFSET				13

#define MACB_PAE_SIZE				1

#define MACB_RM9200_RMII_OFFSET			13 /* AT91RM9200 only */

#define MACB_RM9200_RMII_SIZE			1  /* AT91RM9200 only */

#define MACB_RBOF_OFFSET			14

#define MACB_RBOF_SIZE				2

#define MACB_RLCE_OFFSET			16

#define MACB_TGO_SIZE				1

#define MACB_BEX_OFFSET				4

#define MACB_BEX_SIZE				1

#define MACB_RM9200_BNQ_OFFSET			4 /* AT91RM9200 only */

#define MACB_RM9200_BNQ_SIZE			1 /* AT91RM9200 only */

#define MACB_COMP_OFFSET			5

#define MACB_COMP_SIZE				1

#define MACB_UND_OFFSET				6