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/cmd/Kconfig b/cmd/Kconfig
index aec2090..2fa0829 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1356,6 +1356,13 @@
 	help
 	  Delay execution for some time
 
+config MP
+	bool "support for multiprocessor"
+	help
+	  This provides an option to brinup
+	  different processors in multiprocessor
+	  cases.
+
 config CMD_TIMER
 	bool "timer"
 	help