cmd: Add a memory-search command

It is useful to be able to find hex values and strings in a memory range.
Add a command to support this.

cmd: Fix 'md' and add a memory-search command
At present 'md.q' is broken. This series provides a fix for this. It also
implements a new memory-search command called 'ms'. It allows searching
memory for hex and string data.
END

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/Makefile b/test/Makefile
index bab8f1a..7c40399 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -3,6 +3,7 @@
 # (C) Copyright 2012 The Chromium Authors
 
 obj-$(CONFIG_SANDBOX) += bloblist.o
+obj-$(CONFIG_CMDLINE) += cmd/
 obj-$(CONFIG_UNIT_TEST) += cmd_ut.o
 obj-$(CONFIG_UNIT_TEST) += ut.o
 obj-$(CONFIG_SANDBOX) += command_ut.o