treewide: fix typos in comment blocks

Looks like the word "contiguous" is often mistyped.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

drivers/usb/gadget/udc/bdc/bdc.h

@@ -290,7 +290,7 @@ struct bdc_sr {
 	__le32 offset[4];
 };
 
-/* bd_table: contigous bd's in a table */
+/* bd_table: contiguous bd's in a table */
 struct bd_table {
 	struct bdc_bd *start_bd;
 	/* dma address of start bd of table*/