treewide: fix "followings" to "following"

Most of them are my mistakes.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/board/freescale/ls2080aqds/README b/board/freescale/ls2080aqds/README
index 5c98866..f288750 100644
--- a/board/freescale/ls2080aqds/README
+++ b/board/freescale/ls2080aqds/README
@@ -112,7 +112,7 @@
 ----------------------------
 The X-QSGMII-16PORT is a 4xQSGMII/8xSGMII riser card with eighth SerDes
 interfaces implemented in PCIe form factor board.
-It supports followings
+It supports following:
  - Card can operate with up to 4 QSGMII lane simultaneously
  - Card can operate with up to 8 SGMII lane simultaneously