firmware: firmware: meson-sm: fix compile-test default

Enabling compile testing should not enable every individual driver (we
have "allyesconfig" for that).

Fixes: 4a434abc ("firmware: meson-sm: enable build as module")
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20250725075429.10056-1-johan@kernel.org


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>