imx: fix typo in header file

Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>
diff --git a/include/imximage.h b/include/imximage.h
index ace5cf8..1ed3284 100644
--- a/include/imximage.h
+++ b/include/imximage.h
@@ -73,7 +73,7 @@
 	CMD_CHECK_BITS_CLR,
 	CMD_CSF,
 	CMD_PLUGIN,
-	/* Follwoing on i.MX8MQ/MM */
+	/* Following on i.MX8MQ/MM */
 	CMD_FIT,
 	CMD_SIGNED_HDMI,
 	CMD_LOADER,