mmc: block: Add single read for 4k sector cards

mmc: block: Add single read for 4k sector cards

Cards with 4k native sector size may only be read 4k-aligned,
accommodate for this in the single read recovery and use it.

Fixes: 1095e107a07d3 (mmc: block: Add blk-mq support)
Signed-off-by: Christian Loehle <cloehle@hyperstone.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/cf4f316274c5474586d0d99b17db4a4c@hyperstone.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>