arm64: zynqmp: Enable 2 NAND chips support for zynqmp_mini_nand

This patch enables 2 nand chips support for zynqmp mini nand

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/xilinx_zynqmp_mini_nand_defconfig b/configs/xilinx_zynqmp_mini_nand_defconfig
index 4be6248..2b896f7 100644
--- a/configs/xilinx_zynqmp_mini_nand_defconfig
+++ b/configs/xilinx_zynqmp_mini_nand_defconfig
@@ -49,4 +49,5 @@
 # CONFIG_MMC is not set
 CONFIG_NAND=y
 CONFIG_NAND_ARASAN=y
+CONFIG_SYS_NAND_MAX_CHIPS=2
 # CONFIG_EFI_LOADER is not set