openpower: Add loadkeys package to enable backtab

This is a copy of the buildroot package 'kbd', but with a custom install
command that only installs the 'loadkeys' binary, saving almost 1MB of
space.

The loadkeys command then allows us to add additional keymap definitions
during init to enable the use of Shift-Tab on the VGA console.

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
diff --git a/openpower/configs/barreleye_defconfig b/openpower/configs/barreleye_defconfig
index 5f52640..271b357 100644
--- a/openpower/configs/barreleye_defconfig
+++ b/openpower/configs/barreleye_defconfig
@@ -68,3 +68,4 @@
 BR2_PACKAGE_MDADM=y
 BR2_TARGET_ROOTFS_CPIO_XZ=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
+BR2_PACKAGE_LOADKEYS=y
diff --git a/openpower/configs/firestone_defconfig b/openpower/configs/firestone_defconfig
index 2ba04a9..060aef5 100644
--- a/openpower/configs/firestone_defconfig
+++ b/openpower/configs/firestone_defconfig
@@ -68,3 +68,4 @@
 BR2_PACKAGE_MDADM=y
 BR2_TARGET_ROOTFS_CPIO_XZ=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
+BR2_PACKAGE_LOADKEYS=y
diff --git a/openpower/configs/garrison_defconfig b/openpower/configs/garrison_defconfig
index eafb6d5..2709965 100644
--- a/openpower/configs/garrison_defconfig
+++ b/openpower/configs/garrison_defconfig
@@ -68,3 +68,4 @@
 BR2_PACKAGE_MDADM=y
 BR2_TARGET_ROOTFS_CPIO_XZ=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
+BR2_PACKAGE_LOADKEYS=y
diff --git a/openpower/configs/habanero_defconfig b/openpower/configs/habanero_defconfig
index a936321..5af42ca 100644
--- a/openpower/configs/habanero_defconfig
+++ b/openpower/configs/habanero_defconfig
@@ -68,3 +68,4 @@
 BR2_PACKAGE_MDADM=y
 BR2_TARGET_ROOTFS_CPIO_XZ=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
+BR2_PACKAGE_LOADKEYS=y
diff --git a/openpower/configs/palmetto_defconfig b/openpower/configs/palmetto_defconfig
index 67dcc1e..5659e4e 100644
--- a/openpower/configs/palmetto_defconfig
+++ b/openpower/configs/palmetto_defconfig
@@ -67,4 +67,4 @@
 BR2_PACKAGE_MDADM=y
 BR2_TARGET_ROOTFS_CPIO_XZ=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
-
+BR2_PACKAGE_LOADKEYS=y