display: Fix pmgr device id for t6022 dcpext4

Signed-off-by: Janne Grunau <[email protected]>

Author: jannau

src/display.c

@@ -93,7 +93,7 @@ static const display_config_t display_config_m2_ultra = {
     .disp_dart = "/arm-io/dart-dispext4",
     .dp2hdmi_gpio = "/arm-io/dp2hdmi-gpio1",
     .dptx_phy = "/arm-io/lpdptx-phy1",
-    .pmgr_dev = "DISPEXT4_CPU0",
+    .pmgr_dev = "DISPEXT0_CPU0",
     .dcp_alias = "dcpext4",
     .dcp_index = 1,
     .num_dptxports = 2,