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/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 04f9e17..5ef294f 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -352,7 +352,7 @@
 
 /*
  * Write random or indexed TLB entry, and care about the hazards from
- * the preceeding mtc0 and for the following eret.
+ * the preceding mtc0 and for the following eret.
  */
 enum tlb_write_entry { tlb_random, tlb_indexed };