typo fixes: specfic -> specific

Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/arch/i386/mm/discontig.c b/arch/i386/mm/discontig.c
index fe6eb90..b387332 100644
--- a/arch/i386/mm/discontig.c
+++ b/arch/i386/mm/discontig.c
@@ -43,7 +43,7 @@
 bootmem_data_t node0_bdata;
 
 /*
- * numa interface - we expect the numa architecture specfic code to have
+ * numa interface - we expect the numa architecture specific code to have
  *                  populated the following initialisation.
  *
  * 1) node_online_map  - the map of all nodes configured (online) in the system