Add DeLock61959 as separate dvb-usb-package

Adds virtual package for delock61959 dvb-c usb-tuner. Requires patched em28xx_usb (see other pull request) and install required modules, firmware + config.
Config is necessary due to faulty implemented dual-i2c-support in that module (em28xx_usb). Chip on DeLock61959 has support for 2 buses, but uses 1 only, so due to incorrect return values when getting i2c-values, module tries to register 2 i2c-adapters using the same sysfs-path, which obviously segfaults.
Patch adds options to disable specific i2c-dev via config, which is then applied as default config by the virtual-driver-package.

To DOs :
Add Package-Block for standard - enigma2-plugins-drivers-dvb-usb-em28xx - package
Add Check if i2c-devices-disable-option.patch has been applied to module
(dont know how to possibly to this)