trusty:app:sample: Mark object as being BTI compatible on aarch64.

This file contains no code, so is compatible by default but needs to be marked as such for the linker.

Bug: 260397427
Test: build.py (all targets)
Test: boot to Android home
Change-Id: I6de3ea1db0ddba8e976b6ea2b3363cfb1cea4ecf
1 file changed