lttng-ust: add missing dependency on -devel package.
lttng-ust: add missing dependency on -devel package.

Closes: #12734 [via git-merge-pr]

necrophcodr/void-packages,coredumb/void-packages,coredumb/void-packages,coredumb/void-packages,coredumb/void-packages,necrophcodr/void-packages,NeoChontrix/void-packages,necrophcodr/void-packages,NeoChontrix/void-packages,NeoChontrix/void-packages,NeoChontrix/void-packages,coredumb/void-packages,NeoChontrix/void-packages,coredumb/void-packages,NeoChontrix/void-packages,necrophcodr/void-packages,necrophcodr/void-packages