configs: Migrate CONFIG_SYS_TEXT_BASE

On the NIOS2 and Xtensa architectures, we do not have
CONFIG_SYS_TEXT_BASE set.  This is a strict migration of the current
values into the defconfig and removing them from the headers.

I did not attempt to add more default values in and for now will leave
that to maintainers.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/P5020DS_NAND_SECURE_BOOT_defconfig b/configs/P5020DS_NAND_SECURE_BOOT_defconfig
index 37b9223..81a6c8e 100644
--- a/configs/P5020DS_NAND_SECURE_BOOT_defconfig
+++ b/configs/P5020DS_NAND_SECURE_BOOT_defconfig
@@ -1,4 +1,5 @@
 CONFIG_PPC=y
+CONFIG_SYS_TEXT_BASE=0xFFF40000
 CONFIG_SECURE_BOOT=y
 CONFIG_MPC85xx=y
 CONFIG_TARGET_P5020DS=y
@@ -7,7 +8,7 @@
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
-CONFIG_SYS_EXTRA_OPTIONS="RAMBOOT_PBL,SYS_TEXT_BASE=0xFFF40000"
+CONFIG_SYS_EXTRA_OPTIONS="RAMBOOT_PBL"
 CONFIG_BOOTDELAY=10
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_HUSH_PARSER=y