[SPARC32]: clean include/asm-sparc/irq.h

Move stuff used only by arch/sparc/kernel/* into arch/sparc/kernel/irq.h
and into individual files in there (e.g. macros internal to sun4m_irq.c,
etc.)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
index 63ed19b..730eb57 100644
--- a/arch/sparc/kernel/sun4m_smp.c
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -31,6 +31,8 @@
 #include <asm/oplib.h>
 #include <asm/cpudata.h>
 
+#include "irq.h"
+
 #define IRQ_RESCHEDULE		13
 #define IRQ_STOP_CPU		14
 #define IRQ_CROSS_CALL		15