sysutils/edk2: Reinstantiate binary aliases for ar and dtc

ar and dtc in base differ in function and capability form the ports
counterparts. Use from ports to make to build run again.

PR: 292544
MFH: 2026Q2
Differential Revision: https://reviews.freebsd.org/D57279

(cherry picked from commit d69944f5e177117e1e8b0e3041bd44374f88d10f)