Convert CONFIG_SPL_RELOC_TEXT_BASE et al to Kconfig

This converts the following to Kconfig:
   CONFIG_SPL_RELOC_TEXT_BASE
   CONFIG_SPL_RELOC_STACK
   CONFIG_SPL_RELOC_MALLOC_ADDR
   CONFIG_SPL_RELOC_MALLOC_SIZE

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/T2080RDB_SDCARD_defconfig b/configs/T2080RDB_SDCARD_defconfig
index 0d09be3..2c35b80 100644
--- a/configs/T2080RDB_SDCARD_defconfig
+++ b/configs/T2080RDB_SDCARD_defconfig
@@ -39,6 +39,10 @@
 CONFIG_SPL_SYS_CCSR_DO_NOT_RELOCATE=y
 CONFIG_SPL_FLUSH_IMAGE=y
 CONFIG_SPL_SKIP_RELOCATE=y
+CONFIG_SPL_RELOC_STACK=0xfffd8000
+CONFIG_SPL_RELOC_MALLOC=y
+CONFIG_SPL_RELOC_MALLOC_ADDR=0xfffcb000
+CONFIG_SPL_RELOC_MALLOC_SIZE=0xc800
 CONFIG_SPL_ENV_SUPPORT=y
 CONFIG_SPL_I2C=y
 CONFIG_SPL_MPC8XXX_INIT_DDR=y