pciutils: avoid lspci conflict with busybox

pciutils: avoid lspci conflict with busybox

if virtualization is enabled as DISTRO_FEATURES, then meta-virtualization layer
enables CONFIG_LSPCI=y for busybox, which in result have conflicts with pciutils

update-alternatives: Error: not linking ..core-image-base/1.0-r0/rootfs/usr/bin/lspci
to /bin/busybox.nosuid since
..core-image-base/1.0-r0/rootfs/usr/bin/lspci exists and is not a link

So marking it as ALTERNATIVE with ALTERNATIVE_PRIORITY set to 100

Ref:
https://git.yoctoproject.org/poky/commit/meta/recipes-bsp/pciutils?id=a81af375dfc51446b21548dce2afa6a77bc02df3
https://github.com/pciutils/pciutils/commit/0b307156c92f61c1a02d232f4c6ed17e888de9a9
https://git.yoctoproject.org/meta-virtualization/tree/recipes-core/busybox/busybox/lspci.cfg
https://git.yoctoproject.org/meta-virtualization/tree/recipes-core/busybox/busybox_virtualization.inc#n4
https://git.yoctoproject.org/meta-virtualization/tree/recipes-core/busybox/busybox_%25.bbappend#n1

Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>