The MCI instances got aliases in the DTS from linux upstream which changed
the eMMC devicename e.g. from disk0 to mmc2. Adapt to this.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sphinx warns:

  Documentation/boards/imx/amazon-kindle-4-5.rst:39: WARNING: Enumerated list ends without a blank line; unexpected unindent.
  Documentation/boards/imx/amazon-kindle-4-5.rst:42: WARNING: Enumerated list ends without a blank line; unexpected unindent.
  Documentation/boards/imx/amazon-kindle-4-5.rst:45: WARNING: Enumerated list ends without a blank line; unexpected unindent.

Solve this by fixing the list enumeration and adding blank lines.

Signed-off-by: Roland Hieber <rhi@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

- complete the instructions to get into USB bootloader mode
- put hardware info to the top, and split into sections
- add info about the new defconfig
- remove build size hints, which have been applied to the defconfig
- transform literal blocks into code blocks

Signed-off-by: Roland Hieber <rohieb@rohieb.name>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: Roland Hieber <rohieb@rohieb.name>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Upper and lower case are significant when sorting file names. Stay with
lower case file names for now, and make sure the file name order is the
same as the order of the page titles in the table of contents.

Signed-off-by: Roland Hieber <rohieb@rohieb.name>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>