Imx6 new emmc 2023

This product will be built with the Alliance ASFC4G31M-51BIN. This is an equivalent 4 GB part and it is expected to have generally no impact to software. There are 2 notable differences:

1. The eMMC boot partitions (/dev/mmcblk*boot0/boot1) are 4 MB instead of 16 MB. These are not used on this series as they are not used by any default software, and are read only by default.

2. For users previously using Micron's proprietary tools to view the remaining life of the eMMC, the newer chipsets should instead use the data provided by "mmc extcsd read" as remaining lifetime is now part of the newer eMMC standards.

Like the previous Micron part update this eMMC by default comes with write reliability already enabled. Our endurance testing shows this part lasting as long as the previous Micron part as well, so we do not expect any other notable impacts to users.