BSP: Update the µSD

Updating the BSP on the µSD 5.4

1. Go to the deployment directory of the image components.
   cd [yocto dir]/build/tmp/deploy/images/imx8mq-itx-p-c444/

2. Ensure there aren't any µSD partitions already mounted.
   sudo umount /dev/[µSD device name]*

3. Install the bmap-tools if necessary.
   sudo apt install bmap-tools

4. Copy the image using bmap.
   sudo bmaptool copy --bmap winsys-image-demo-imx8mq-itx-p-c444.wic.bmap winsys-image-demo-imx8mq-itx-p-c444.wic.bz2 /dev/[µSD device name]