Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/include/linux/poll.h b/include/linux/poll.h
index 1a2ccd6..cf40010 100644
--- a/include/linux/poll.h
+++ b/include/linux/poll.h
@@ -82,7 +82,7 @@
 }
 
 /*
- * Scaleable version of the fd_set.
+ * Scalable version of the fd_set.
  */
 
 typedef struct {