initramfs-live-boot-tiny: Create the initramfs-live-boot-tiny recipe

The original initramfs-live-boot recipe RDEPENDS on udev, which is ok since
the init script relies some of its functionality on udevadm and such,
but on core-image-tiny-initramfs the init script simply drops to shell
after a basic setup, so udev is not needed.

This patch splits up an initramfs-live-boot-tiny recipe which does not
use udev, but uses busybox-mdev instead, eudev installed about 600
extra Kilobytes to core-image-tiny-initramfs userspace, by avoiding to
install eudev we achieve an even smaller footprint (almost 40% smaller).

(From OE-Core rev: 7725bad91b89a291a7099b2d99789a86b028f329)

Signed-off-by: Alejandro Hernandez <alejandro.hernandez@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/initrdscripts/initramfs-live-boot-tiny_1.0.bb

@@ -0,0 +1,21 @@
+SUMMARY = "Live image init script"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
+DEPENDS = "virtual/kernel"
+RDEPENDS_${PN} = "busybox-mdev"
+SRC_URI = "file://init-live.sh"
+
+PR = "r12"
+
+S = "${WORKDIR}"
+
+do_install() {
+        install -m 0755 ${WORKDIR}/init-live.sh ${D}/init
+        install -d ${D}/dev
+        mknod -m 622 ${D}/dev/console c 5 1
+}
+
+FILES_${PN} += " /init /dev "
+
+# Due to kernel dependency
+PACKAGE_ARCH = "${MACHINE_ARCH}"