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/B4420QDS_NAND_defconfig b/configs/B4420QDS_NAND_defconfig
index 41b7318..05d2f353 100644
--- a/configs/B4420QDS_NAND_defconfig
+++ b/configs/B4420QDS_NAND_defconfig
@@ -30,6 +30,7 @@
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_DATE=y
+CONFIG_MP=y
 CONFIG_CMD_EXT2=y
 CONFIG_ENV_IS_IN_NAND=y
 CONFIG_FSL_CAAM=y