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/pinebook_defconfig b/configs/pinebook_defconfig
index 2760f8c..75cb056 100644
--- a/configs/pinebook_defconfig
+++ b/configs/pinebook_defconfig
@@ -7,6 +7,7 @@
 CONFIG_DRAM_ZQ=3881949
 CONFIG_MMC_SUNXI_SLOT_EXTRA=2
 CONFIG_R_I2C_ENABLE=y
+CONFIG_SPL_TEXT_BASE=0x10060
 # CONFIG_CMD_FLASH is not set
 # CONFIG_SPL_DOS_PARTITION is not set
 # CONFIG_SPL_EFI_PARTITION is not set