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-phosphor/skeleton/obmc-libobmc-intf_%.bbappend b/meta-fii/meta-kudo/recipes-phosphor/skeleton/obmc-libobmc-intf_%.bbappend
index 533a69a..889b910 100644
--- a/meta-fii/meta-kudo/recipes-phosphor/skeleton/obmc-libobmc-intf_%.bbappend
+++ b/meta-fii/meta-kudo/recipes-phosphor/skeleton/obmc-libobmc-intf_%.bbappend
@@ -1,3 +1,3 @@
-FILESEXTRAPATHS_append_kudo := ":${THISDIR}/${PN}"
-SRC_URI_append_kudo = " file://gpio_defs.json"
+FILESEXTRAPATHS:append:kudo := ":${THISDIR}/${PN}"
+SRC_URI:append:kudo = " file://gpio_defs.json"