[ci] run qemu for both GNU LD and rustc's LLD. (fix)

Author: sekineh

cortex-m-rt/ci/script.sh

@@ -71,9 +71,9 @@ main() {
     case $TARGET in
         thumbv6m-none-eabi|thumbv7m-none-eabi)
             # linking with GNU LD
-            cargo run --target $TARGET --example qemu \
+            cargo run --target $TARGET --example qemu -- \
                   -C linker=arm-none-eabi-ld | grep "x = 42"
-            cargo run --target $TARGET --example qemu --release \
+            cargo run --target $TARGET --example qemu --release -- \
                   -C linker=arm-none-eabi-ld | grep "x = 42"
             # linking with rustc's LLD
             cargo run --target $TARGET --example qemu | grep "x = 42"