bsps: Adjust bsp.h Doxygen groups

Update #3706.

bsps/powerpc/psim/include/bsp.h

@@ -1,3 +1,11 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSBSPsPowerPCPSIM
+ *
+ * @brief Global BSP definitions.
+ */
+
 /*  bsp.h
  *
  *  This include file contains all Papyrus board IO definitions.
@@ -30,6 +38,16 @@
 #ifndef LIBBSP_POWERPC_PSIM_BSP_H
 #define LIBBSP_POWERPC_PSIM_BSP_H
 
+/**
+ * @defgroup RTEMSBSPsPowerPCPSIM PSIM
+ *
+ * @ingroup RTEMSBSPsPowerPC
+ *
+ * @brief PSIM Board Support Package.
+ *
+ * @{
+ */
+
 #include <bspopts.h>
 
 #ifdef ASM
@@ -87,4 +105,6 @@ int BSP_connect_clock_handler(void);
 
 #define BSP_HAS_NO_VME
 
+/** @} */
+
 #endif