powerpc: Add DAWR/X SPR number definitions

#define   CTRL_CT1	0x40000000	/* thread 1 */

#define   CTRL_TE	0x00c00000	/* thread enable */

#define   CTRL_RUNLATCH	0x1

#define SPRN_DAWR	0xB4

#define SPRN_DAWRX	0xBC

#define   DAWRX_USER	(1UL << 0)

#define   DAWRX_KERNEL	(1UL << 1)

#define   DAWRX_HYP	(1UL << 2)

#define SPRN_DABR	0x3F5	/* Data Address Breakpoint Register */

#define   DABR_TRANSLATION	(1UL << 2)

#define   DABR_DATA_WRITE	(1UL << 1)