If 'env print -e' is invoked without variable name, all UEFI variables are
listed.

Describe that 'env print -e' requires CONFIG_HEXDUMP=y to print content of
UEFI variables.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

* add link to askenv man-page
* add printenv

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

The 'env' man-page is currently only partially sorted.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

Add the environment variable "usb_ignorelist" to prevent USB devices
listed in it from being bound to drivers. This allows to ignore devices
which are undesirable or trigger bugs in u-boot's USB stack.
Devices emulating keyboards are one example of undesirable devices as
u-boot currently supports only a single USB keyboard device. Most
commonly, people run into this with Yubikeys, so let's ignore those in
the default environment.

Based on previous USB keyboard specific patches for the same purpose.

Link: https://lore.kernel.org/u-boot/7ab604fb-0fec-4f5e-8708-7a3a7e2cb568@denx.de/
Reviewed-by: Neal Gompa <neal@gompa.dev>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Janne Grunau <j@jannau.net>

List all prefix currently used for generating FAT partition names.
Describe which device class uses which prefix.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

Add :: for correct formatting of example.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

Merge in all changes from the next branch now that the release is out.

Add a cross reference to the itest command.

Fix a typo: %s/Example/Examples/.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

Provide a man-page for the itest command.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>