Fix synthesis error
Altera's documentation for sld_virtual_jag had the parameter name
wrong.
[ci skip]
@@ -271,7 +271,7 @@ module de2_115_top(
`ifdef VENDOR_ALTERA
// Altera's virtual JTAG megafunction.
sld_virtual_jtag #(
- .SLD_IR_WIDTH(4)
+ .sld_ir_width(4)
)virtual_jtag(
.tdo(jtag.tdo),
.tck(virt_tck),
