sparc64: Add 'reg_num' argument to pcr_ops methods.

SPARC-T4 and later have multiple PCR registers, one for each
PIC counter.

Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/include/asm/pcr.h

@@ -2,8 +2,8 @@
 #define __PCR_H
 
 struct pcr_ops {
-	u64 (*read)(void);
-	void (*write)(u64);
+	u64 (*read)(unsigned long);
+	void (*write)(unsigned long, u64);
 };
 extern const struct pcr_ops *pcr_ops;