package/util-linux: add more tool select options

Add more options to Config.in to allow optionally select or deselect
util-linux tools.

Also fix s/BR2_PACKAGE_WDCTL/BR2_PACKAGE_UTIL_LINUX_WDCTL/

Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>