uboot-phytec

ARM: uniphier: increase CONFIG_SYS_MONITOR_LEN again

With the migration to distro-boot, the size of the U-Boot proper
image for uniphier_v7_defconfig exceeded the current limit, 576KB.
Increase it to 832KB.

CONFIG_SYS_UBOOT_BASE must be moved as well to avoid the image
over-wrap because the boot ROM of Pro4, Pro5, PXs2/LD6b loads
the SPL to the physical address 0x100000.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>