qapi: convert sendkey

Convert 'sendkey' to use QAPI.

QAPI passes key's index of mapping table to qmp_send_key(),
not keycode. So we use help functions to convert key/code to
index of key_defs, and 'index' will be converted to 'keycode'
inside qmp_send_key().

For qmp, QAPI would check invalid key and raise error.
For hmp, invalid key is checked in hmp_send_key().

'send-key' of QMP doesn't support key in hexadecimal format.

Signed-off-by: Amos Kong <akong@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
diff --git a/hmp-commands.hx b/hmp-commands.hx
index bd0c6c9..5cee131 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -505,7 +505,7 @@
         .args_type  = "keys:s,hold-time:i?",
         .params     = "keys [hold_ms]",
         .help       = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
-        .mhandler.cmd = do_sendkey,
+        .mhandler.cmd = hmp_send_key,
     },
 
 STEXI