powerpc/xsysace: add compatible string for non-ipcore instance

Add "xlnx,sysace" compatible string to the of_platform binding
table. Platforms which have the SysACE chip on board (e.g.
Katmai) instead of via a Xilinx generated IP core will use
this value in their device tree.

Signed-off-by: Yuri Tikhonov <[e-mail]>
Signed-off-by: Grant Likely <[e-mail]>

drivers/block/xsysace.c

···
 	{ .compatible = "xlnx,opb-sysace-1.00.b", },
 	{ .compatible = "xlnx,opb-sysace-1.00.c", },
 	{ .compatible = "xlnx,xps-sysace-1.00.a", },
+	{ .compatible = "xlnx,sysace", },
 	{},
 };
 MODULE_DEVICE_TABLE(of, ace_of_match);