mmc-utils: Assert MMC_IOC_MULTI_CMD in compile time

Notify of mult-ioctl violation during preprocessing instead of bailing out
in runtime. This prevents bogus copies of mmc-utils binaries wondering
about out there.

Signed-off-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/20230609083425.765-1-avri.altman@wdc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
1 file changed