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/dynamic-layers/aspeed-layer/recipes-kernel/linux/linux-aspeed_%.bbappend b/meta-facebook/dynamic-layers/aspeed-layer/recipes-kernel/linux/linux-aspeed_%.bbappend
new file mode 100644
index 0000000..8a561fb
--- /dev/null
+++ b/meta-facebook/dynamic-layers/aspeed-layer/recipes-kernel/linux/linux-aspeed_%.bbappend
@@ -0,0 +1 @@
+require recipes-kernel/linux/facebook-linux.inc
diff --git a/meta-facebook/dynamic-layers/nuvoton-layer/recipes-kernel/linux/linux-nuvoton_%.bbappend b/meta-facebook/dynamic-layers/nuvoton-layer/recipes-kernel/linux/linux-nuvoton_%.bbappend
new file mode 100644
index 0000000..8a561fb
--- /dev/null
+++ b/meta-facebook/dynamic-layers/nuvoton-layer/recipes-kernel/linux/linux-nuvoton_%.bbappend
@@ -0,0 +1 @@
+require recipes-kernel/linux/facebook-linux.inc