ARM: vexpress_*_defconfig: Enable CMD_UBI support

This allow for convenient use of QEMU machine to test loading of UBI
filesystem. There are a couple of changes made together of this which
are required:

 1) The malloc must be at least 512 KiB to allow the use of UBI
    filesystem. We are going to enable it in a next patch.

 2) MTD_DEVICE must be enabled, otherwise we get missing symbols
    during the build

Following configs were change:

 - vexpress_aemv8a_dram_defconfig
 - vexpress_aemv8a_juno_defconfig
 - vexpress_aemv8a_semi_defconfig
 - vexpress_ca15_tc2_defconfig
 - vexpress_ca5x2_defconfig
 - vexpress_ca9x4_defconfig

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>

configs/vexpress_aemv8a_dram_defconfig

@@ -23,12 +23,14 @@ CONFIG_CMD_ARMFLASH=y
 # CONFIG_CMD_NFS is not set
 CONFIG_CMD_CACHE=y
 # CONFIG_CMD_MISC is not set
+CONFIG_CMD_UBI=y
 # CONFIG_ISO_PARTITION is not set
 # CONFIG_EFI_PARTITION is not set
 CONFIG_ENV_IS_IN_FLASH=y
 CONFIG_DM=y
 # CONFIG_MMC is not set
 CONFIG_MTD_NOR_FLASH=y
+CONFIG_MTD_DEVICE=y
 CONFIG_FLASH_CFI_DRIVER=y
 CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
 CONFIG_SYS_FLASH_PROTECTION=y

configs/vexpress_aemv8a_juno_defconfig

@@ -23,12 +23,14 @@ CONFIG_CMD_ARMFLASH=y
 # CONFIG_CMD_NFS is not set
 CONFIG_CMD_CACHE=y
 # CONFIG_CMD_MISC is not set
+CONFIG_CMD_UBI=y
 # CONFIG_ISO_PARTITION is not set
 # CONFIG_EFI_PARTITION is not set
 CONFIG_ENV_IS_IN_FLASH=y
 CONFIG_DM=y
 # CONFIG_MMC is not set
 CONFIG_MTD_NOR_FLASH=y
+CONFIG_MTD_DEVICE=y
 CONFIG_FLASH_CFI_DRIVER=y
 CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
 CONFIG_SYS_FLASH_PROTECTION=y

configs/vexpress_aemv8a_semi_defconfig

@@ -23,12 +23,14 @@ CONFIG_CMD_ARMFLASH=y
 # CONFIG_CMD_NFS is not set
 CONFIG_CMD_CACHE=y
 # CONFIG_CMD_MISC is not set
+CONFIG_CMD_UBI=y
 # CONFIG_ISO_PARTITION is not set
 # CONFIG_EFI_PARTITION is not set
 CONFIG_ENV_IS_IN_FLASH=y
 CONFIG_DM=y
 # CONFIG_MMC is not set
 CONFIG_MTD_NOR_FLASH=y
+CONFIG_MTD_DEVICE=y
 CONFIG_FLASH_CFI_DRIVER=y
 CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
 CONFIG_SYS_FLASH_PROTECTION=y

configs/vexpress_ca15_tc2_defconfig

@@ -18,8 +18,10 @@ CONFIG_CMD_MMC=y
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_NFS is not set
 # CONFIG_CMD_MISC is not set
+CONFIG_CMD_UBI=y
 CONFIG_ENV_IS_IN_FLASH=y
 CONFIG_MTD_NOR_FLASH=y
+CONFIG_MTD_DEVICE=y
 CONFIG_FLASH_CFI_DRIVER=y
 CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
 CONFIG_SYS_FLASH_PROTECTION=y

configs/vexpress_ca5x2_defconfig

@@ -17,8 +17,10 @@ CONFIG_CMD_MMC=y
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_NFS is not set
 # CONFIG_CMD_MISC is not set
+CONFIG_CMD_UBI=y
 CONFIG_ENV_IS_IN_FLASH=y
 CONFIG_MTD_NOR_FLASH=y
+CONFIG_MTD_DEVICE=y
 CONFIG_FLASH_CFI_DRIVER=y
 CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
 CONFIG_SYS_FLASH_PROTECTION=y

configs/vexpress_ca9x4_defconfig

@@ -17,8 +17,10 @@ CONFIG_CMD_MMC=y
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_NFS is not set
 # CONFIG_CMD_MISC is not set
+CONFIG_CMD_UBI=y
 CONFIG_ENV_IS_IN_FLASH=y
 CONFIG_MTD_NOR_FLASH=y
+CONFIG_MTD_DEVICE=y
 CONFIG_FLASH_CFI_DRIVER=y
 CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
 CONFIG_SYS_FLASH_PROTECTION=y

include/configs/vexpress_common.h

@@ -120,7 +120,7 @@
 #define CONFIG_INITRD_TAG		1
 
 /* Size of malloc() pool */
-#define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + 128 * 1024)
+#define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + 512 * 1024) /* >= 512 KiB */
 
 #define SCTL_BASE			V2M_SYSCTL
 #define VEXPRESS_FLASHPROG_FLVPPEN	(1 << 0)