keymaps: import systemd support from meta-shr layer

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-oe/recipes-bsp/keymaps/keymaps/keymaps.service

@@ -0,0 +1,9 @@
+[Unit]
+Description=Loads custom keymap if available
+ConditionPathExists=/etc/keymap-2.6.map
+
+[Service]
+ExecStart=/usr/bin/loadkeys /etc/keymap-2.6.map
+
+[Install]
+WantedBy=multi-user.target

meta-oe/recipes-bsp/keymaps/keymaps_1.0.bbappend

@@ -0,0 +1,8 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+PRINC := "${@int(PRINC) + 4}"
+
+SRC_URI += " file://keymaps.service"
+
+inherit systemd
+SYSTEMD_PACKAGES = "${PN}-systemd"
+SYSTEMD_SERVICE = "${PN}.service"