pg-wcom-ls102xa: Include <config.h> in the board file

Given that this file references CFG_* defines, we need to be explicit in
our inclusion of config.h, so that these will be defined.

Reviewed-by: Aleksandar Gerasimovski <aleksandar.gerasimovski@hitacienergy.com>
Signed-off-by: Tom Rini <trini@konsulko.com>

board/keymile/pg-wcom-ls102xa/pg-wcom-ls102xa.c

@@ -3,6 +3,7 @@
  * Copyright 2020 Hitachi Power Grids. All rights reserved.
  */
 
+#include <config.h>
 #include <event.h>
 #include <i2c.h>
 #include <asm/io.h>