cmd: Kconfig: Move CONFIG_MP to Kconfig

This patch moves CONFIG_MP to Kconfig

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/MPC8641HPCN_defconfig b/configs/MPC8641HPCN_defconfig
index 71c7e1f1..b3dd6ac 100644
--- a/configs/MPC8641HPCN_defconfig
+++ b/configs/MPC8641HPCN_defconfig
@@ -15,6 +15,7 @@
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
+CONFIG_MP=y
 CONFIG_CMD_EXT2=y
 CONFIG_DOS_PARTITION=y
 CONFIG_SCSI_AHCI=y