atngw100mkii: add missing CONFIG_SYS_TEXT_BASE

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
ARC: enable CONFIG_SYS_BOOT_RAMDISK_HIGH

This enables relocation of initrd to the end of available DDR before Linux
kernel start-up as it is done in other architectures.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Merge branch 'master' of git://git.denx.de/u-boot-avr32
Merge branch 'master' of git://git.denx.de/u-boot-arc