treewide: mem: Move mtest related defines to Kconfig

Move below defines which are used by mtest utility to Kconfig.
CONFIG_SYS_MEMTEST_START
CONFIG_SYS_MEMTEST_END

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
[trini: Fix kmcoge5ne board, re-run migration as well]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/ls1088ardb_tfa_defconfig b/configs/ls1088ardb_tfa_defconfig
index 7690292..1c36801 100644
--- a/configs/ls1088ardb_tfa_defconfig
+++ b/configs/ls1088ardb_tfa_defconfig
@@ -26,6 +26,8 @@
 CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_CMD_GREPENV=y
 CONFIG_CMD_MEMTEST=y
+CONFIG_SYS_MEMTEST_START=0x80000000
+CONFIG_SYS_MEMTEST_END=0x9fffffff
 CONFIG_CMD_DM=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_MMC=y