Rename CONFIG_SYS_TEXT_BASE to CONFIG_TEXT_BASE

The current name is inconsistent with SPL which uses CONFIG_SPL_TEXT_BASE
and this makes it imposible to use CONFIG_VAL().

Rename it to resolve this problem.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/da850evm_direct_nor_defconfig b/configs/da850evm_direct_nor_defconfig
index a9996d7..f7521ac 100644
--- a/configs/da850evm_direct_nor_defconfig
+++ b/configs/da850evm_direct_nor_defconfig
@@ -2,7 +2,7 @@
 CONFIG_SKIP_LOWLEVEL_INIT_ONLY=y
 CONFIG_ARCH_CPU_INIT=y
 CONFIG_ARCH_DAVINCI=y
-CONFIG_SYS_TEXT_BASE=0x60000000
+CONFIG_TEXT_BASE=0x60000000
 CONFIG_SYS_MALLOC_LEN=0x110000
 CONFIG_SYS_MALLOC_F_LEN=0x800
 CONFIG_TARGET_DA850EVM=y