qemurunner.py: Fix error on calls to run_monitor

A change in QEMUMonitorProtocol.cmd() requires that we either pass in
kwargs instead of an argument dict or move to cmd_raw()

cmd() was renamed to cmd_raw() (and command() was renamed to cmd())
See:
https://github.com/qemu/qemu/commit/37274707f6f3868fae7e0055d9a703006fc142d0
https://github.com/qemu/qemu/commit/684750ab4f8a3ad69512b71532408be3ac2547d4

My concern with this patch is that I haven't seen this come up with
utils/dump.py which also uses QemuMonitor's run_monitor. If it is
occuring, this should fix issues there as well

(From OE-Core rev: 9665d38ab60c1c3b27887c2b1a6396f13a1b33ea)

Signed-off-by: Eilís 'pidge' Ní Fhlannagáin <pidge@baylibre.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/utils/qemurunner.py

@@ -650,9 +650,9 @@ class QemuRunner:
         if hasattr(self, 'qmp') and self.qmp:
             self.qmp.settimeout(timeout)
             if args is not None:
-                return self.qmp.cmd(command, args)
+                return self.qmp.cmd_raw(command, args)
             else:
-                return self.qmp.cmd(command)
+                return self.qmp.cmd_raw(command)
 
     def run_serial(self, command, raw=False, timeout=60):
         # Returns (status, output) where status is 1 on success and 0 on error