board/km: drop CONFIG_KM_ROOTFSSIZE

This unused nowadays and can be dropped.

Signed-off-by: Holger Brunck <holger.brunck@hitachienergy.com>
diff --git a/include/configs/km/km-powerpc.h b/include/configs/km/km-powerpc.h
index 20a36fb..424caa0 100644
--- a/include/configs/km/km-powerpc.h
+++ b/include/configs/km/km-powerpc.h
@@ -21,11 +21,8 @@
  * @CONFIG_KM_RESERVED_PRAM: reserved pram for special purpose
  * @CONFIG_KM_PHRAM: address for /var
  * @CONFIG_KM_PNVRAM: address for PNVRAM (for the application)
- * @CONFIG_KM_ROOTFSSIZE: address for rootfilesystem in RAM
  */
 
-/* size of rootfs in RAM */
-#define CONFIG_KM_ROOTFSSIZE	0x0
 /* set the default PRAM value to at least PNVRAM + PHRAM when pram env variable
  * is not valid yet, which is the case for when u-boot copies itself to RAM */
 #define CONFIG_PRAM		((CONFIG_KM_PNVRAM + CONFIG_KM_PHRAM)>>10)
diff --git a/include/configs/kmcent2.h b/include/configs/kmcent2.h
index 0d470c4..1b19001 100644
--- a/include/configs/kmcent2.h
+++ b/include/configs/kmcent2.h
@@ -179,11 +179,8 @@
  * @CONFIG_KM_RESERVED_PRAM: reserved pram for special purpose
  * @CONFIG_KM_PHRAM: address for /var
  * @CONFIG_KM_PNVRAM: address for PNVRAM (for the application)
- * @CONFIG_KM_ROOTFSSIZE: address for rootfilesystem in RAM
  */
 
-/* size of rootfs in RAM */
-#define CONFIG_KM_ROOTFSSIZE	0x0
 /* set the default PRAM value to at least PNVRAM + PHRAM when pram env variable
  * is not valid yet, which is the case for when u-boot copies itself to RAM
  */
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 15d39a6..4c760fe 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -246,7 +246,6 @@
 CONFIG_KM_DEV_ENV_FLASH_BOOT_UBI
 CONFIG_KM_ECC_MODE
 CONFIG_KM_NEW_ENV
-CONFIG_KM_ROOTFSSIZE
 CONFIG_KM_UBI_LINUX_MTD
 CONFIG_KM_UBI_PARTITION_NAME_APP
 CONFIG_KM_UBI_PARTITION_NAME_BOOT