powerpc: Add missing DABR flags

The powerpc 64 bit architecture defines three flags for the
DABR (Data Address Breakpoint Register).  Add definitions
for the currently missing DABR_DATA_WRITE and DABR_DATA_READ
flags to the powerpc reg.h file.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/include/asm/reg.h

@@ -155,6 +155,8 @@
 #define   CTRL_RUNLATCH	0x1
 #define SPRN_DABR	0x3F5	/* Data Address Breakpoint Register */
 #define   DABR_TRANSLATION	(1UL << 2)
+#define   DABR_DATA_WRITE	(1UL << 1)
+#define   DABR_DATA_READ	(1UL << 0)
 #define SPRN_DABR2	0x13D	/* e300 */
 #define SPRN_DABRX	0x3F7	/* Data Address Breakpoint Register Extension */
 #define   DABRX_USER	(1UL << 0)