Change the default behavior of 'printenv -e' to show only EFI variable
names. The previous verbose output is now available with the -v flag.
This makes the command more user-friendly for quick variable listing.
Update documentation to reflect the new behavior and provide examples
of all three output modes: default (names only), -n (details without
hex dump), and -v (full verbose output).
It might be nicer to use -d to enable the dump, rather than have it on
by default.
Co-developed-by: Claude <noreply@anthropic.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
b60fd4dae9