monitor: Move {hmp, qmp}.c to monitor/{hmp, qmp}-cmds.c

Now that we have a monitor/ subdirectory, let's move hmp.c and qmp.c
from the root directory there. As they contain implementations of
monitor commands, rename them to {hmp,qmp}-cmds.c, so that {hmp,qmp}.c
are free for the HMP and QMP infrastructure.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190613153405.24769-9-kwolf@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 575ea6e..3c7d366 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1919,7 +1919,8 @@
 M: Dr. David Alan Gilbert <dgilbert@redhat.com>
 S: Maintained
 F: monitor/misc.c
-F: hmp.[ch]
+F: monitor/hmp*
+F: hmp.h
 F: hmp-commands*.hx
 F: include/monitor/hmp-target.h
 F: tests/test-hmp.c
@@ -2039,7 +2040,7 @@
 QMP
 M: Markus Armbruster <armbru@redhat.com>
 S: Supported
-F: qmp.c
+F: monitor/qmp*
 F: monitor/misc.c
 F: docs/devel/*qmp-*
 F: docs/interop/*qmp-*