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_mini_defconfig b/configs/xilinx_versal_mini_defconfig
index 7a0557a..3c5ab01 100644
--- a/configs/xilinx_versal_mini_defconfig
+++ b/configs/xilinx_versal_mini_defconfig
@@ -3,7 +3,7 @@
 CONFIG_SYS_ICACHE_OFF=y
 CONFIG_COUNTER_FREQUENCY=100000000
 CONFIG_ARCH_VERSAL=y
-CONFIG_SYS_TEXT_BASE=0xFFFC0000
+CONFIG_TEXT_BASE=0xFFFC0000
 CONFIG_SYS_MALLOC_LEN=0x2000
 CONFIG_SYS_MALLOC_F_LEN=0x400
 CONFIG_NR_DRAM_BANKS=3