common: Move RAM-sizing functions to init.h

These functions relate to memory init so move them into the init
header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/AndesTech/adp-ae3xx/adp-ae3xx.c b/board/AndesTech/adp-ae3xx/adp-ae3xx.c
index db08d86..a04415d 100644
--- a/board/AndesTech/adp-ae3xx/adp-ae3xx.c
+++ b/board/AndesTech/adp-ae3xx/adp-ae3xx.c
@@ -5,6 +5,7 @@
  * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
  */
 
+#include <init.h>
 #include <asm/mach-types.h>
 #include <common.h>
 #if defined(CONFIG_FTMAC100) && !defined(CONFIG_DM_ETH)
diff --git a/board/AndesTech/adp-ag101p/adp-ag101p.c b/board/AndesTech/adp-ag101p/adp-ag101p.c
index 657921e..faf39b4 100644
--- a/board/AndesTech/adp-ag101p/adp-ag101p.c
+++ b/board/AndesTech/adp-ag101p/adp-ag101p.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <init.h>
 #if defined(CONFIG_FTMAC100) && !defined(CONFIG_DM_ETH)
 #include <netdev.h>
 #endif
diff --git a/board/AndesTech/ax25-ae350/ax25-ae350.c b/board/AndesTech/ax25-ae350/ax25-ae350.c
index 47e6929..f164073 100644
--- a/board/AndesTech/ax25-ae350/ax25-ae350.c
+++ b/board/AndesTech/ax25-ae350/ax25-ae350.c
@@ -5,6 +5,7 @@
  */
 
 #include <common.h>
+#include <init.h>
 #if defined(CONFIG_FTMAC100) && !defined(CONFIG_DM_ETH)
 #include <netdev.h>
 #endif