Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <[email protected]>
diff --git a/arch/mips/fw/arc/promlib.c b/arch/mips/fw/arc/promlib.c
index c508c00..b7f9dd3 100644
--- a/arch/mips/fw/arc/promlib.c
+++ b/arch/mips/fw/arc/promlib.c
@@ -4,7 +4,7 @@
  * for more details.
  *
  * Copyright (C) 1996 David S. Miller ([email protected])
- * Compability with board caches, Ulf Carlsson
+ * Compatibility with board caches, Ulf Carlsson
  */
 #include <linux/kernel.h>
 #include <asm/sgialib.h>