tests/tcg/s390x: Fix test-svc with clang

clang does not support expressions involving symbols in instructions
like lghi yet, so building hello-s390x-asm.S with it fails.

Move the expression to the literal pool and load it from there.

Fixes: be4a4cb42961 ("tests/tcg/s390x: Test single-stepping SVC")
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230707154242.457706-1-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2 files changed