lm32_evr: improve doxygen

Add doxygen to the header files in the /lm32/lm32_evr/include directory.

c/src/lib/libbsp/lm32/lm32_evr/include/bsp.h

@@ -1,3 +1,11 @@
+/**
+ * @file
+ *
+ * @ingroup lm32_evr
+ *
+ * @brief Global BSP definitions.
+ */
+
 /*  bsp.h
  *
  *  This include file contains all board IO definitions.
@@ -26,6 +34,14 @@
 #include <rtems/console.h>
 #include <rtems/clockdrv.h>
 
+/**
+ * @defgroup lm32_evr EVR Support
+ *
+ * @ingroup bsp_lm32
+ *
+ * @brief EVR support package.
+ */
+
 #if defined(RTEMS_NETWORKING)
 #include <rtems/rtems_bsdnet.h>
 #endif

c/src/lib/libbsp/lm32/lm32_evr/include/coverhd.h

@@ -1,3 +1,11 @@
+/**
+ * @file
+ * 
+ * @ingroup lm32_evr
+ *
+ * @brief C overhead definitions.
+ */
+
 /*  coverhd.h
  *
  *  This include file has defines to represent the overhead associated

c/src/lib/libbsp/lm32/lm32_evr/include/system_conf.h

@@ -1,3 +1,11 @@
+/**
+ * @file
+ * 
+ * @ingroup lm32_evr
+ * 
+ * @brief System configuration.
+ */
+
 #ifndef __SYSTEM_CONFIG_H_
 #define __SYSTEM_CONFIG_H_
 

c/src/lib/libbsp/lm32/lm32_evr/include/tm27.h

@@ -1,3 +1,11 @@
+/**
+ * @file
+ * 
+ * @ingroup lm32_evr
+ * 
+ * @brief TM27 timing test routines.
+ */
+
 /*
  *  tm27.h
  *