Add fixture disk_sdcard for the sdcard test, since the test requires an
SD card to be present on the board.
Fixes#41331
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Adds a disk driver test, intended for the NXP USDHC driver but valid for
any disk device. The test performs multiple reads and writes to the
disk, and verifies that the driver does not write out of bounds to the
provided buffer.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>