sparc64: Move generic PCR support code to seperate file.

It all lives in the oprofile support code currently and we will need
to share this stuff with NMI watchdog and perf_counter support.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/include/asm/pil.h b/arch/sparc/include/asm/pil.h
index d573820..32a7efe 100644
--- a/arch/sparc/include/asm/pil.h
+++ b/arch/sparc/include/asm/pil.h
@@ -23,6 +23,7 @@
 #define PIL_SMP_CTX_NEW_VERSION	4
 #define PIL_DEVICE_IRQ		5
 #define PIL_SMP_CALL_FUNC_SNGL	6
+#define PIL_DEFERRED_PCR_WORK	7
 #define PIL_NORMAL_MAX		14
 #define PIL_NMI			15