meta-facebook: meta-tiogapass: switch u-boot to 2019.04

Switching the u-boot branch from the 2016.07-aspeed-openbmc
to the 2019.04-aspeed-openbmc

Added the config file to modify the defconfig file from
the uboot-machine.

Removing the files related to the 2016.07-aspeed branch.

Tested: Tested in Tiogapass platform and Verified
        the U-boot logs.

Signed-off-by: Logananth Sundararaj <logananth_s@hcl.com>
Change-Id: I5caadacdc1232fc180db79abe2f11c959feca018
diff --git a/meta-facebook/meta-tiogapass/recipes-bsp/u-boot/u-boot-aspeed-sdk_%.bbappend b/meta-facebook/meta-tiogapass/recipes-bsp/u-boot/u-boot-aspeed-sdk_%.bbappend
new file mode 100644
index 0000000..8089fdc
--- /dev/null
+++ b/meta-facebook/meta-tiogapass/recipes-bsp/u-boot/u-boot-aspeed-sdk_%.bbappend
@@ -0,0 +1,2 @@
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
+SRC_URI += "file://tiogapass.cfg"