src/poky:man-db: Add missing rdep for col utility

man utility calls col utility internally when formatting is asked for
therefore it expects col to be in rootfs otherwise silently errors with
retcode 3 meaning 'file not found' in this case its due to col not being
found, other distros eg. gets this via bsdextrautils dependency

Add it via packageconfig and keep is disabled by default since its
deprecated and col does not exist on musl

libssh2 ptest mansyntax.sh fails due to this error, which now works

(From OE-Core rev: bf5c8801b471fa13df9d55932375bfaedb623bd0)

Signed-off-by: Khem Raj <raj.khemgmail.com>
Signed-off-by: Richard Purdie <richard.purdielinuxfoundation.org>

Author: kraj