stm32l0: enable iwdg

lib/stm32/l0/Makefile

@@ -48,6 +48,7 @@ OBJS		+= flash.o flash_common_l01.o
 OBJS		+= i2c_common_v2.o
 OBJS		+= rng_common_v1.o
 OBJS		+= usart_common_all.o usart_common_v2.o
+OBJS		+= iwdg_common_all.o
 
 OBJS            += usb.o usb_control.o usb_standard.o
 OBJS            += st_usbfs_core.o st_usbfs_v2.o

lib/stm32/l0/iwdg.c

@@ -0,0 +1,31 @@
+/** @defgroup iwdg_file IWDG
+
+@ingroup STM32l0xx
+
+@brief <b>libopencm3 STM32L0xx Independent Watchdog Timer</b>
+
+@version 1.0.0
+
+@date 28 March 2018
+
+LGPL License Terms @ref lgpl_license
+*/
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/stm32/iwdg.h>