configs: move CONFIG_SPL_TEXT_BASE to Kconfig

Moved CONFIG_SPL_TEXT_BASE to common/spl/Kconfig and migrate existing
values.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
[trini: Re-run migration]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/smdkv310_defconfig b/configs/smdkv310_defconfig
index 681cbf0..1725769 100644
--- a/configs/smdkv310_defconfig
+++ b/configs/smdkv310_defconfig
@@ -7,6 +7,7 @@
 CONFIG_DISTRO_DEFAULTS=y
 # CONFIG_USE_BOOTCOMMAND is not set
 # CONFIG_SPL_FRAMEWORK is not set
+CONFIG_SPL_TEXT_BASE=0x02021410
 CONFIG_SYS_PROMPT="SMDKV310 # "
 # CONFIG_CMD_XIMG is not set
 CONFIG_CMD_GPT=y