MIPS: IP27: Fix clash with NMI_OFFSET from hardirq.h

There was already a define for NMI_OFFSET in asm/sn/addr.h, which now
clashes with linux/hardirq.h. Rename the one in sn/addr.h to fix IP27
builds..
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/sn/addrs.h

@@ -359,11 +359,11 @@
 	TO_NODE_UNCAC((nasid), LAUNCH_OFFSET(nasid, slice))
 #define LAUNCH_SIZE(nasid)	KLD_LAUNCH(nasid)->size
 
-#define NMI_OFFSET(nasid, slice)					\
+#define SN_NMI_OFFSET(nasid, slice)					\
 	(KLD_NMI(nasid)->offset +					\
 	 KLD_NMI(nasid)->stride * (slice))
 #define NMI_ADDR(nasid, slice)						\
-	TO_NODE_UNCAC((nasid), NMI_OFFSET(nasid, slice))
+	TO_NODE_UNCAC((nasid), SN_NMI_OFFSET(nasid, slice))
 #define NMI_SIZE(nasid)	KLD_NMI(nasid)->size
 
 #define KLCONFIG_OFFSET(nasid)	KLD_KLCONFIG(nasid)->offset