android/client: Add code for mce method

This patch adds implementation of mce method to haltest.
diff --git a/android/client/if-mce.c b/android/client/if-mce.c
index c671fb2..76c9f73 100644
--- a/android/client/if-mce.c
+++ b/android/client/if-mce.c
@@ -58,6 +58,12 @@
 
 static void get_remote_mas_instances_p(int argc, const char **argv)
 {
+	bt_bdaddr_t addr;
+
+	RETURN_IF_NULL(if_mce);
+	VERIFY_ADDR_ARG(2, &addr);
+
+	EXEC(if_mce->get_remote_mas_instances, &addr);
 }
 
 static struct method methods[] = {