cpu/stm32f0: add support for stm32f031k6

cpu/stm32f0/include/cpu_conf.h

@@ -43,6 +43,9 @@
 #ifdef CPU_MODEL_STM32F042K6
 #include "stm32f042x6.h"
 #endif
+#ifdef CPU_MODEL_STM32F031K6
+#include "stm32f031x6.h"
+#endif
 #ifdef __cplusplus
 extern "C" {
 #endif

cpu/stm32f0/ldscripts/stm32f031k6.ld

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2017 Inria
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @addtogroup      cpu_stm32f0
+ * @{
+ *
+ * @file
+ * @brief           Memory definitions for the STM32F031K6
+ *
+ * @author          Alexandre Abadie <alexandre.abadie@inria.fr>
+ *
+ * @}
+ */
+
+MEMORY
+{
+    rom (rx)    : ORIGIN = 0x08000000, LENGTH = 32K
+    ram (rwx)   : ORIGIN = 0x20000000, LENGTH = 4K
+    cpuid (r)   : ORIGIN = 0x1ffff7ac, LENGTH = 12
+}
+
+_cpuid_address = ORIGIN(cpuid);
+
+INCLUDE cortexm_base.ld