ARM: rmobile: Add R8A77965 M3NULCB support

Add defconfig and board specific adjustments for the R8A77965 M3N ULCB.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/board/renesas/ulcb/ulcb.c b/board/renesas/ulcb/ulcb.c
index 81d6f8f..9785107 100644
--- a/board/renesas/ulcb/ulcb.c
+++ b/board/renesas/ulcb/ulcb.c
@@ -97,6 +97,10 @@
 	    !strcmp(name, "r8a7796-m3ulcb-u-boot"))
 		return 0;
 
+	if ((cpu_type == RMOBILE_CPU_TYPE_R8A77965) &&
+	    !strcmp(name, "r8a77965-m3nulcb-u-boot"))
+		return 0;
+
 	return -1;
 }
 #endif