Use glib memory allocation and free functions

qemu_malloc/qemu_free no longer exist after this commit.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/bt-host.c b/bt-host.c
index 095254d..df5b7cd 100644
--- a/bt-host.c
+++ b/bt-host.c
@@ -177,7 +177,7 @@
     }
 # endif
 
-    s = qemu_mallocz(sizeof(struct bt_host_hci_s));
+    s = g_malloc0(sizeof(struct bt_host_hci_s));
     s->fd = fd;
     s->hci.cmd_send = bt_host_cmd;
     s->hci.sco_send = bt_host_sco;