target (base-files): Fixed failsafe mode by adding back insmod diag

SVN-Revision: 22186

target/linux/brcm47xx/base-files/lib/preinit/05_reset_button_brcm

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+enable_reset_button() {
+	insmod diag
+}
+
+boot_hook_add preinit_main enable_reset_button
+