[MIPS] SN: Rename SGI_SN0_N_MODE -> SGI_SN_N_MODE.

It's not SN0-specific.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/sgi-ip27/Kconfig b/arch/mips/sgi-ip27/Kconfig
index 6da5926..4b7c3c6 100644
--- a/arch/mips/sgi-ip27/Kconfig
+++ b/arch/mips/sgi-ip27/Kconfig
@@ -4,7 +4,7 @@
 #	  This options adds support for userspace processes upto 16TB size.
 #	  Normally the limit is just .5TB.
 
-config SGI_SN0_N_MODE
+config SGI_SN_N_MODE
 	bool "IP27 N-Mode"
 	depends on SGI_IP27
 	help