targets/radiona_ulx4m_ld_v2.py: added skip_dm to ECP5DDRPHY CTOR to avoid build failure due to dm pads not in the same group than others

Author: trabucayre

litex_boards/targets/radiona_ulx4m_ld_v2.py

@@ -150,7 +150,9 @@ def __init__(self, revision="0.3", device="85F", toolchain="trellis", sys_clk_fr
 
             self.submodules.ddrphy = ECP5DDRPHY(
                 pads = PHYPadsReducer(platform.request("ddram"), [0, 1]),
-                sys_clk_freq=sys_clk_freq)
+                    sys_clk_freq = sys_clk_freq,
+                    dm_skip      = True,
+                )
             self.comb += self.crg.stop.eq(self.ddrphy.init.stop)
             self.comb += self.crg.reset.eq(self.ddrphy.init.reset)
             self.add_sdram("sdram",