Revert "mmc: mvsdio: Use sg_miter for PIO"

This reverts commit 2761822c.

When testing on real hardware the patch does not work.
Revert, try to acquire real hardware, and retry.
These systems typically don't have highmem anyway so the
impact is likely zero.

Cc: stable@vger.kernel.org
Reported-by: Charlie <g4sra@protonmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240927-kirkwood-mmc-regression-v1-1-2e55bbbb7b19@linaro.org


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>