tests/tcg: Adjust variable defintion from cc-option

Define the variable to the compiler flag used, not "y".
This avoids replication of the compiler flag itself.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20240630190050.160642-3-richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240705084047.857176-8-alex.bennee@linaro.org>
3 files changed