add qemuwrapper-cross recipe

This will just install a wrapper script in STAGING_BINDIR_CROSS that
will execute the proper qemu user binary for the current target.

[YOCTO #2599]

(From OE-Core rev: faaa5e7fd4353b73289f163d9f601cf0869698f3)

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/qemu/qemuwrapper-cross_1.0.bb

@@ -0,0 +1,14 @@
+DESCRIPTION = "Qemu wrapper script"
+LICENSE = "MIT"
+PR = "r0"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
+
+inherit qemu
+
+do_install () {
+    install -d ${STAGING_BINDIR_CROSS}
+
+    echo "#!/bin/sh" > ${STAGING_BINDIR_CROSS}/qemuwrapper
+    echo exec env ${@qemu_target_binary(d)} \"\$@\" >> ${STAGING_BINDIR_CROSS}/qemuwrapper
+    chmod +x ${STAGING_BINDIR_CROSS}/qemuwrapper
+}