devel/libtecla: fix build on armv7

Link with CC instead of LD to grab the right support libraries.
This makes sure the symbol __aeabi_idivmod from -lgcc is present.

Approved by: portmgr (build fix blanket)
MFH: 2025Q1

(cherry picked from commit 5541f7ee811692c62b18cbcbce44a52aa4a6f415)