powerpc: Cleanup definition of the PID register

Move SPRN_PID declearations in various locations into one place.
Signed-off-by: Tseng-Hui (Frank) Lin <thlin@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/include/asm/reg.h

@@ -170,6 +170,16 @@
 #define SPEFSCR_FRMC 	0x00000003	/* Embedded FP rounding mode control */
 
 /* Special Purpose Registers (SPRNs)*/
+
+#ifdef CONFIG_40x
+#define SPRN_PID	0x3B1	/* Process ID */
+#else
+#define SPRN_PID	0x030	/* Process ID */
+#ifdef CONFIG_BOOKE
+#define SPRN_PID0	SPRN_PID/* Process ID Register 0 */
+#endif
+#endif
+
 #define SPRN_CTR	0x009	/* Count Register */
 #define SPRN_DSCR	0x11
 #define SPRN_CTRLF	0x088

arch/powerpc/include/asm/reg_booke.h

@@ -150,8 +150,6 @@
  * or IBM 40x.
  */
 #ifdef CONFIG_BOOKE
-#define SPRN_PID	0x030	/* Process ID */
-#define SPRN_PID0	SPRN_PID/* Process ID Register 0 */
 #define SPRN_CSRR0	0x03A	/* Critical Save and Restore Register 0 */
 #define SPRN_CSRR1	0x03B	/* Critical Save and Restore Register 1 */
 #define SPRN_DEAR	0x03D	/* Data Error Address Register */
@@ -168,7 +166,6 @@
 #define SPRN_TCR	0x154	/* Timer Control Register */
 #endif /* Book E */
 #ifdef CONFIG_40x
-#define SPRN_PID	0x3B1	/* Process ID */
 #define SPRN_DBCR1	0x3BD	/* Debug Control Register 1 */		
 #define SPRN_ESR	0x3D4	/* Exception Syndrome Register */
 #define SPRN_DEAR	0x3D5	/* Data Error Address Register */