doxygen: score: Add nios2 CPU architecture group

Update #3706.

cpukit/score/cpu/nios2/include/rtems/asm.h

@@ -39,6 +39,16 @@
 #include <rtems/score/cpuopts.h>
 #include <rtems/score/nios2.h>
 
+/**
+ * @defgroup RTEMSScoreCPUnios2ASM nios2 Assembler Support
+ *
+ * @ingroup RTEMSScoreCPUnios2
+ *
+ * @brief nios2 Assembler Support
+ *
+ * @{
+ */
+
 /*
  *  Recent versions of GNU cpp define variables which indicate the
  *  need for underscores and percents.  If not using GNU cpp or
@@ -95,4 +105,6 @@
 #define PUBLIC(sym) .globl SYM (sym)
 #define EXTERN(sym) .globl SYM (sym)
 
+/** @} */
+
 #endif

cpukit/score/cpu/nios2/include/rtems/score/cpu.h

@@ -1,5 +1,7 @@
 /**
  * @file
+ * 
+ * @addtogroup RTEMSScoreCPUnios2
  *
  * @brief Altera Nios II CPU Department Source
  */

cpukit/score/cpu/nios2/include/rtems/score/cpuimpl.h

@@ -17,6 +17,16 @@
 
 #include <rtems/score/cpu.h>
 
+/**
+ * @defgroup RTEMSScoreCPUnios2 Nios II (nios2)
+ *
+ * @ingroup RTEMSScoreCPU
+ *
+ * @brief Nios II (nios2) Architecture Support
+ *
+ * @{
+ */
+
 #define CPU_PER_CPU_CONTROL_SIZE 0
 
 #ifndef ASM
@@ -45,4 +55,6 @@ RTEMS_INLINE_ROUTINE void _CPU_Instruction_no_operation( void )
 
 #endif /* ASM */
 
+/** @} */
+
 #endif /* _RTEMS_SCORE_CPUIMPL_H */