u-boot-xlnx.inc: Add support for building working SPL
u-boot-xlnx.inc: Add support for building working SPL

You need to add the files ps7_init.[ch] via a board specific
SRC_URI append. The ps7 files should be GPL licensed to avoid
license headaches.

Signed-off-by: Philip Balister <3ba3974e96044dcde818e6310ed799abe10671d4@balister.org>
Signed-off-by: Nathan Rossi <e1e6d173c6873c0ae2b831215d22380d293bb314@xilinx.com>

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