arch/mips/: Spelling fixes

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>

arch/mips/sgi-ip27/ip27-hubio.c

@@ -168,7 +168,7 @@ static void hub_set_piomode(nasid_t nasid)
 }
 
 /*
- * hub_pio_init  -  PIO-related hub initalization
+ * hub_pio_init  -  PIO-related hub initialization
  *
  * @hub:	hubinfo structure for our hub
  */