[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/ip27-init.c b/arch/mips/sgi-ip27/ip27-init.c
index 8651a0e..16c4b34 100644
--- a/arch/mips/sgi-ip27/ip27-init.c
+++ b/arch/mips/sgi-ip27/ip27-init.c
@@ -228,7 +228,7 @@
 	 */
 	n_mode = LOCAL_HUB_L(NI_STATUS_REV_ID) & NSRI_MORENODES_MASK;
 	printk("Machine is in %c mode.\n", n_mode ? 'N' : 'M');
-#ifdef CONFIG_SGI_SN0_N_MODE
+#ifdef CONFIG_SGI_SN_N_MODE
 	if (!n_mode)
 		panic("Kernel compiled for M mode.");
 #else