dynamic-layers/meta-mender-tegra: add bbappend for libubootenv-fake

which uses tegra-boot-tools for getting the current
boot slot.

Signed-off-by: Matt Madison <matt@madison.systems>

layers/meta-tegra-support/dynamic-layers/meta-mender-tegra/recipes-bsp/u-boot/libubootenv-fake/fw_printenv

@@ -0,0 +1,38 @@
+#!/bin/sh
+quiet=
+if [ "$1" = "-n" ]; then
+    quiet="yes"
+    shift
+    if [ -z "$1" ]; then
+        echo "ERR: missing var name with -n" >&2
+        exit 1
+    fi
+fi
+if [ -z "$1" ]; then
+    echo "mender_boot_part=`tegra-boot-control --current-slot`"
+    exit 0
+fi
+while [ -n "$1" ]; do
+    case "$1" in
+        mender_boot_part|mender_boot_part_hex)
+            [ -n "$quiet" ] || echo -n "$1="
+            tegra-boot-control --current-slot
+            ;;
+        mender_uboot_separator)
+            [ -n "$quiet" ] || echo -n "$1="
+            echo "something other than just 1"
+            ;;
+        upgrade_available)
+            [ -n "$quiet" ] || echo -n "$1="
+	    if [ -e "/var/lib/mender/upgrade_available" ]; then
+		echo "1"
+	    else
+		echo "0"
+	    fi
+           ;;
+        *)
+           echo "ERR: no such variable: $1" >&2
+           exit 1
+    esac
+    shift
+done

layers/meta-tegra-support/dynamic-layers/meta-mender-tegra/recipes-bsp/u-boot/libubootenv-fake_%.bbappend

@@ -0,0 +1,3 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${BPN}:"
+
+RDEPENDS_${PN} += "tegra-boot-tools"