This is option is no longer needed as a Makefile option as the USDHC driver
is enabled for all supported series.
Signed-off-by: iabdalkader <i.abdalkader@gmail.com>
The board.json file is intentionally excluded, until the board will be
sold. But including it into the mimxrt series make it easier to keep
the build up-to-date.
iabdalkader