hw/sd/sdcard: Implement SPI R2 return value

In SPI mode, R2 is a 2-byte value.
Implement in spi_response_r2_make() and
return SPI R2 in the SEND_STATUS commands.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Fixes: 775616c3ae8 ("Partial SD card SPI mode support")
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250804133406.17456-6-philmd@linaro.org>
2 files changed