ARM: ux500: Enable support for discard for MMC/SD
ARM: ux500: Enable support for discard for MMC/SD

By enabling MMC_CAP_ERASE for the SD/MMC devices the mmc block
layer will now act on DISCARD requests.

Signed-off-by: Ulf Hansson <fe47b31f388f85ce6ddf64bf3a0cf6b46077d0e6@linaro.org>
Signed-off-by: Linus Walleij <9cd9d802d23c0ed5e224beabf4ae4a5c478746ef@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs