Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/arch/mips/include/asm/pci/bridge.h b/arch/mips/include/asm/pci/bridge.h
index f1f508e..be44fb0 100644
--- a/arch/mips/include/asm/pci/bridge.h
+++ b/arch/mips/include/asm/pci/bridge.h
@@ -262,7 +262,7 @@
 } bridge_t;
 
 /*
- * Field formats for Error Command Word and Auxillary Error Command Word
+ * Field formats for Error Command Word and Auxiliary Error Command Word
  * of bridge.
  */
 typedef struct bridge_err_cmdword_s {