'cifsmount' alone is not able to mount a SMB share, after
having installed kmod-fs-cifs this was possible.
So I guess adding kmod-fs-cifs as a dependency to cifsmount is ok.

Signed-off-by: Paul Wassi <p.wassi@gmx.at>

Import cifs-utils from old packages:

* update to 6.4
* add upstream patch to fix builds with musl
* add license information
* add myself as maintainer

Signed-off-by: Florian Fainelli <florian@openwrt.org>