zynqmp: Add option to select between Cadence UARTs

Add build time option 'cadence1' for ZYNQMP_CONSOLE to select the 2nd
UART available in the SoC.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/plat/xilinx/zynqmp/platform.mk b/plat/xilinx/zynqmp/platform.mk
index abbb15a..ad87cd9 100644
--- a/plat/xilinx/zynqmp/platform.mk
+++ b/plat/xilinx/zynqmp/platform.mk
@@ -53,6 +53,9 @@
     $(eval $(call add_define,ZYNQMP_BL32_MEM_SIZE))
 endif
 
+ZYNQMP_CONSOLE	?=	cadence
+$(eval $(call add_define_val,ZYNQMP_CONSOLE,ZYNQMP_CONSOLE_ID_${ZYNQMP_CONSOLE}))
+
 PLAT_INCLUDES		:=	-Iinclude/plat/arm/common/			\
 				-Iinclude/plat/arm/common/aarch64/		\
 				-Iplat/xilinx/zynqmp/include/			\