use latest 4.13 for or1k, for working atomics support

target/config/Config.in.kernelversion

@@ -49,6 +49,7 @@ config ADK_TARGET_KERNEL_VERSION_4_9
 	depends on !ADK_TARGET_ARCH_CSKY
 	depends on !ADK_TARGET_ARCH_METAG
 	depends on !ADK_TARGET_ARCH_NDS32
+	depends on !ADK_TARGET_ARCH_OR1K
 	depends on !ADK_TARGET_ARCH_RISCV32
 	depends on !ADK_TARGET_ARCH_RISCV64
 	depends on !ADK_TARGET_SYSTEM_QEMU_ARM_VERSATILEPB_NOMMU