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/xilinx_versal_virt_defconfig b/configs/xilinx_versal_virt_defconfig
index 6afd067..de74b70 100644
--- a/configs/xilinx_versal_virt_defconfig
+++ b/configs/xilinx_versal_virt_defconfig
@@ -3,7 +3,7 @@
 CONFIG_POSITION_INDEPENDENT=y
 CONFIG_SYS_INIT_SP_BSS_OFFSET=1572864
 CONFIG_ARCH_VERSAL=y
-CONFIG_SYS_TEXT_BASE=0x8000000
+CONFIG_TEXT_BASE=0x8000000
 CONFIG_SYS_MALLOC_F_LEN=0x100000
 CONFIG_DEFAULT_DEVICE_TREE="xilinx-versal-virt"
 CONFIG_SYS_PROMPT="Versal> "