meta-fii/meta-kudo: follow the new Yocto override syntax change

Changing the syntax for various yocto files ie. (_ to :) changes to
bb, bbappend and conf files.

Signed-off-by: Mohaimen Alsamarai <mohaimen.alsamarai@fii-na.com>
Change-Id: If25577ee9d98398c1a1ab7f85a0373c46af70245
diff --git a/meta-fii/meta-kudo/recipes-kernel/linux/linux-nuvoton_%.bbappend b/meta-fii/meta-kudo/recipes-kernel/linux/linux-nuvoton_%.bbappend
index 5276bef..611af32 100644
--- a/meta-fii/meta-kudo/recipes-kernel/linux/linux-nuvoton_%.bbappend
+++ b/meta-fii/meta-kudo/recipes-kernel/linux/linux-nuvoton_%.bbappend
@@ -1,3 +1,3 @@
-FILESEXTRAPATHS_prepend_kudo := "${THISDIR}/linux-nuvoton:"
+FILESEXTRAPATHS:prepend:kudo := "${THISDIR}/linux-nuvoton:"
 
-SRC_URI_append_kudo = " file://kudo.cfg"
+SRC_URI:append:kudo = " file://kudo.cfg"