add module-init-tools provides and obsoletes lines to spec

add module-init-tools provides and obsoletes lines to spec

Help with the transition from module-init-tools to kmod by setting
provides and obsoletes, so that this package can replace
module-init-tools in the image builds.

Hopefully this fixes these build errors:
file /sbin/depmod conflicts between attempted installs of module-init-tools-3.12~pre2-3.1.i586 and kmod-5-1.1.i586
file /sbin/insmod conflicts between attempted installs of module-init-tools-3.12~pre2-3.1.i586 and kmod-5-1.1.i586
file /sbin/lsmod conflicts between attempted installs of module-init-tools-3.12~pre2-3.1.i586 and kmod-5-1.1.i586
file /sbin/modinfo conflicts between attempted installs of module-init-tools-3.12~pre2-3.1.i586 and kmod-5-1.1.i586
file /sbin/modprobe conflicts between attempted installs of module-init-tools-3.12~pre2-3.1.i586 and kmod-5-1.1.i586
file /sbin/rmmod conflicts between attempted installs of module-init-tools-3.12~pre2-3.1.i586 and kmod-5-1.1.i586

Signed-off-by: Chris Leech <christopher.leech@linux.intel.com>