This patch eliminates the screen blanking that happens during boot,
when the eDP output driver attaches ("rkanxdp0 at mainbus0: eDP TX").
Without this patch, the boot console reappears only (much) later, when
rkdrm re-initializes the framebuffer ("rkdrm0: 1920x1080, 32bpp").
As with the previous patch, this is most likely NOT the correct fix!

Index: sys/dev/ic/anxdp.c
===================================================================
RCS file: /cvs/src/sys/dev/ic/anxdp.c,v
retrieving revision 1.6
diff -u -p -r1.6 anxdp.c
--- sys/dev/ic/anxdp.c	14 Jan 2022 06:52:58 -0000	1.6
+++ sys/dev/ic/anxdp.c	22 Feb 2022 21:43:45 -0000
@@ -887,8 +887,6 @@ anxdp_attach(struct anxdp_softc *sc)
 		printf("%s: registering DP Aux failed\n", sc->sc_dev.dv_xname);
 	}
 
-	anxdp_bringup(sc);
-
 	return 0;
 }