buildroot

module-init-tools: fix configure bug by bumping to 3.12

3.11 fails to configure/compile for my host (F14) due to bug
in ax_enable_builddir.m4

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>