meta-facebook: yosemite4: Initial commit for yosemite4n

Description:
Add yosemite4n layer under yosemite4.
Add common configurations for yosemite4 and yosemite4n.
Add json file set uboot baudrate to 57600.

Tested:
Build Success.

Change-Id: I7ff2ffa3e008be9d2f132ac6c3f058fa7b33f329
Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@wiwynn.com>
Signed-off-by: Tim Lee <timlee660101@gmail.com>
Signed-off-by: Ricky CX Wu <ricky.cx.wu.wiwynn@gmail.com>
diff --git a/meta-facebook/conf/layer.conf b/meta-facebook/conf/layer.conf
index 20a8e5c..48abbd3 100644
--- a/meta-facebook/conf/layer.conf
+++ b/meta-facebook/conf/layer.conf
@@ -5,6 +5,13 @@
 BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
             ${LAYERDIR}/recipes-*/*/*.bbappend"
 
+BBFILES_DYNAMIC += " \
+  aspeed-layer:${LAYERDIR}/dynamic-layers/aspeed-layer/recipes-*/*/*.bb \
+  aspeed-layer:${LAYERDIR}/dynamic-layers/aspeed-layer/recipes-*/*/*.bbappend \
+  nuvoton-layer:${LAYERDIR}/dynamic-layers/nuvoton-layer/recipes-*/*/*.bb \
+  nuvoton-layer:${LAYERDIR}/dynamic-layers/nuvoton-layer/recipes-*/*/*.bbappend \
+  "
+
 BBFILE_COLLECTIONS += "facebook-layer"
 BBFILE_PATTERN_facebook-layer := "^${LAYERDIR}/"
 LAYERSERIES_COMPAT_facebook-layer := "nanbield scarthgap"