configs: Migrate CONFIG_SYS_TEXT_BASE

On the NIOS2 and Xtensa architectures, we do not have
CONFIG_SYS_TEXT_BASE set.  This is a strict migration of the current
values into the defconfig and removing them from the headers.

I did not attempt to add more default values in and for now will leave
that to maintainers.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/mk802ii_defconfig b/configs/mk802ii_defconfig
index e81bc42..dd788a0 100644
--- a/configs/mk802ii_defconfig
+++ b/configs/mk802ii_defconfig
@@ -1,5 +1,6 @@
 CONFIG_ARM=y
 CONFIG_ARCH_SUNXI=y
+CONFIG_SYS_TEXT_BASE=0x4a000000
 CONFIG_MACH_SUN4I=y
 CONFIG_DEFAULT_DEVICE_TREE="sun4i-a10-mk802ii"
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set