dropbear: Add option to enable X11 forwarding, enable based on distro feature
dropbear: Add option to enable X11 forwarding, enable based on distro feature

Issue: CR-1096298

Signed-off-by: Mark Hatle <41765ab18fb75e64ff0efe27f2ebcdb2d6f7e44e@xilinx.com>

Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux