board/lx2160a: Add init_func_vid() definition

Add init_func_vid() which calls adjust_vdd()
This ensures adjust_vdd() is called via
init_sequence_f[]

Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
diff --git a/board/freescale/lx2160a/lx2160a.c b/board/freescale/lx2160a/lx2160a.c
index aa474d9..bda7ccc 100644
--- a/board/freescale/lx2160a/lx2160a.c
+++ b/board/freescale/lx2160a/lx2160a.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright 2018 NXP
+ * Copyright 2018-2019 NXP
  */
 
 #include <common.h>
@@ -111,6 +111,13 @@
 	return select_i2c_ch_pca9547(channel);
 }
 
+int init_func_vid(void)
+{
+	if (adjust_vdd(0) < 0)
+		printf("core voltage not adjusted\n");
+
+	return 0;
+}
 #endif
 
 int checkboard(void)