Revert wrong fixes for common misspellings

These changes were incorrectly fixed by codespell. They were now
manually corrected.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
index 96c0b34..657b9f4 100644
--- a/drivers/mtd/nand/diskonchip.c
+++ b/drivers/mtd/nand/diskonchip.c
@@ -400,7 +400,7 @@
 	doc200x_hwcontrol(mtd, 0, NAND_CTRL_ALE | NAND_CTRL_CHANGE);
 	doc200x_hwcontrol(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
 
-	/* We can't' use dev_ready here, but at least we wait for the
+	/* We can't use dev_ready here, but at least we wait for the
 	 * command to complete
 	 */
 	udelay(50);