ultra96-zynqmp: Move to using zynqmp-generic as the foundation
ultra96-zynqmp: Move to using zynqmp-generic as the foundation

We use zynqmp-generic (via a require) as the default now, and only set the
values that make the ultra96 unique.

Note, the two RRECOMMEND dependencies at the end.  These are requried for
WiFi and Bluetooth.

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

Xilinx/meta-xilinx,Xilinx/meta-xilinx,Xilinx/meta-xilinx,Xilinx/meta-xilinx,Xilinx/meta-xilinx,Xilinx/meta-xilinx