[ci] run-make/thumb-none-qemu: use GNU LD.

Author: sekineh

src/test/run-make/thumb-none-qemu/script.sh

@@ -8,7 +8,7 @@ pushd $WORK_DIR
     rm -rf $CRATE || echo OK
     cp -a $HERE/example .
     pushd $CRATE
-        $CARGO run --target $TARGET           | grep "x = 42"
-        $CARGO run --target $TARGET --release | grep "x = 42"
+        env RUSTFLAGS="-C linker=arm-none-eabi-ld -C link-arg=-Tlink.x" $CARGO run --target $TARGET           | grep "x = 42"
+        env RUSTFLAGS="-C linker=arm-none-eabi-ld -C link-arg=-Tlink.x" $CARGO run --target $TARGET --release | grep "x = 42"
     popd
 popd