meta-facebook: Introducing meta-yosemitev2

Initial introduction of Facebook Yosemite V2 platform. The Yosemite
V2 is a multi-node server platforms that hosts four OCP server and
equipped with Aspeed 2500 BMC SoC.

Tested: Built Facebook Yosemite v2 image and loaded on the
        target hardware. Ensured that BMC boots to console.

Change-Id: Ia820565ae142506dd7d9fb22da926b78ebd9f9df
Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Signed-off-by: manikandan-e <manikandan.hcl.ers.epl@gmail.com>
diff --git a/meta-yosemitev2/recipes-bsp/u-boot/u-boot-aspeed_%.bbappend b/meta-yosemitev2/recipes-bsp/u-boot/u-boot-aspeed_%.bbappend
new file mode 100644
index 0000000..51d98a5
--- /dev/null
+++ b/meta-yosemitev2/recipes-bsp/u-boot/u-boot-aspeed_%.bbappend
@@ -0,0 +1,2 @@
+FILESEXTRAPATHS_prepend_yosemitev2 := "${THISDIR}/${PN}:"
+SRC_URI_append_yosemitev2 = " file://0002-board-aspeed-Add-Mux-for-yosemitev2.patch"