feat(versal-net): add DTB console to platform.mk

In the platform.mk file, new console types named dtb
are to be created a macro, VERSAL_NET_CONSOLE_ID_dtb, will
be introduced to check DT console.Users will have the
option to select VERSAL_NET_CONSOLE to dtb, which will run
from the DDR address and OCM. The address XILINX_OF_BOARD_DTB_ADDR
needs to be provided. This configuration will register the
DT console in TF-A

Change-Id: I530492c3f48705387e50895aef4bf229a82d350d
Signed-off-by: Prasad Kummari <prasad.kummari@amd.com>
Signed-off-by: Maheedhar Bollapalli <MaheedharSai.Bollapalli@amd.com>
diff --git a/plat/xilinx/versal_net/platform.mk b/plat/xilinx/versal_net/platform.mk
index 0de95a0..349ece5 100644
--- a/plat/xilinx/versal_net/platform.mk
+++ b/plat/xilinx/versal_net/platform.mk
@@ -60,7 +60,7 @@
 HW_ASSISTED_COHERENCY := 1
 
 VERSAL_NET_CONSOLE	?=	pl011
-ifeq (${VERSAL_NET_CONSOLE}, $(filter ${VERSAL_NET_CONSOLE},pl011 pl011_0 pl011_1 dcc))
+ifeq (${VERSAL_NET_CONSOLE}, $(filter ${VERSAL_NET_CONSOLE},pl011 pl011_0 pl011_1 dcc dtb))
 else
   $(error Please define VERSAL_NET_CONSOLE)
 endif