scripts/spelling.txt: add "overrided" pattern and fix typo instances

Fix typos and add the following to the scripts/spelling.txt:

  overrided||overridden

Link: http://lkml.kernel.org/r/1481573103-11329-22-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/scripts/spelling.txt b/scripts/spelling.txt
index f9564f6..a3e6521 100644
--- a/scripts/spelling.txt
+++ b/scripts/spelling.txt
@@ -721,6 +721,7 @@
 overaall||overall
 overhread||overhead
 overlaping||overlapping
+overrided||overridden
 overriden||overridden
 overun||overrun
 pacakge||package