board: liebherr: Remove <common.h> and add needed includes

Remove <common.h> from this board vendor directory and when needed
add missing include files directly.

Signed-off-by: Tom Rini <trini@konsulko.com>

board/liebherr/display5/display5.c

@@ -4,7 +4,6 @@
  * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
  */
 
-#include <common.h>
 #include <dm.h>
 #include <fdt_support.h>
 #include <init.h>

board/liebherr/display5/spl.c

@@ -4,7 +4,6 @@
  * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
  */
 
-#include <common.h>
 #include <cpu_func.h>
 #include <env.h>
 #include <image.h>

board/liebherr/mccmon6/mccmon6.c

@@ -4,7 +4,6 @@
  * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
  */
 
-#include <common.h>
 #include <env.h>
 #include <init.h>
 #include <serial.h>

board/liebherr/xea/spl_xea.c

@@ -12,7 +12,6 @@
  * on behalf of DENX Software Engineering GmbH
  */
 
-#include <common.h>
 #include <config.h>
 #include <asm/io.h>
 #include <asm/arch/iomux-mx28.h>

board/liebherr/xea/xea.c

@@ -13,7 +13,6 @@
  *
  */
 
-#include <common.h>
 #include <fdt_support.h>
 #include <init.h>
 #include <log.h>