udev: remove udev-utils, add 'udevadm' to udev package

udev: remove udev-utils, add 'udevadm' to udev package

Previously, the udev package only RRECOMMENDS udev-utils package,
but its init script in the udev package really relies on the
'udevadm' command to work properly. As a result, if 'NO_RECOMMENDATIONS'
is set to '1', errors occur at system start-up.

The udev-utils package only contains one file, that is /bin/udevadm.
So it's better that we remove the udev-utils package and move the
'udevadm' command to the udev package.

[YOCTO #6388]

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>