riscv: mbv: Align addresses with default DT

Better to align everything with memory map described in DT to avoid
mistakes. Execute both modes form the same address to make address map more
understandable.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/be54c668d5626ccd702507a86c2a95d1eaefc690.1707911544.git.michal.simek@amd.com
diff --git a/configs/xilinx_mbv32_smode_defconfig b/configs/xilinx_mbv32_smode_defconfig
index c724d1b..3c91160 100644
--- a/configs/xilinx_mbv32_smode_defconfig
+++ b/configs/xilinx_mbv32_smode_defconfig
@@ -1,5 +1,4 @@
 CONFIG_RISCV=y
-CONFIG_TEXT_BASE=0x21200000
 CONFIG_SYS_MALLOC_LEN=0x800000
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
@@ -10,7 +9,7 @@
 CONFIG_DEBUG_UART_CLOCK=1000000
 CONFIG_SYS_CLK_FREQ=100000000
 CONFIG_BOOT_SCRIPT_OFFSET=0x0
-CONFIG_SYS_LOAD_ADDR=0x80200000
+CONFIG_SYS_LOAD_ADDR=0x20200000
 CONFIG_TARGET_XILINX_MBV=y
 CONFIG_RISCV_SMODE=y
 CONFIG_FIT=y