qemu-xilinx-helper-native: Install qemu-oe-bridge-helper

[cmtptr]

This is required to support runqemu with the "bridge=" option.

[cmtptr]

I also have a patch to enhance runqemu to go along with this so that the setup_net_bridge() function uses the QB_NETWORK_DEVICE setting instead of a hard-coded network device which I will be submitting just as soon as I can figure out where and how...

[cmtptr]

There is also another problem with this recipe which I only just discovered. Installing artifacts directly to ${STAGING_BINDIR_NATIVE} seems wrong. In the context of the qemu-xilinx-helper-native recipe, this value is ${BUILDDIR}/tmp/work/${BUILD_ARCH}/..., but in the context of an image recipe (where this variable is referenced from qemuboot-xilinx.bbclass), the value is ${BUILDDIR}/tmp/work/${MACHINE_ARCH}/..., so qemuboot is unable to find the executables installed by this recipe.

I really think it would be best if this recipe would look identical to the qemu-helper-native_1.0.bb recipe from oe-core, but substituting the DEPENDS and RDEPENDS as necessary.
https://github.com/Xilinx/poky/blob/master/meta/recipes-devtools/qemu/qemu-helper-native_1.0.bb
In rel-v2021.2 this was accomplished by simply requiring the original recipe and then performing the substitutions. Maybe it should revert back to that model?