cpu: Add missing doc.md files

cpu/arm7_common/doc.md

@@ -0,0 +1,7 @@
+@defgroup    cpu_arm7_common ARM7 CPU common
+@ingroup     cpu
+@brief       Common implementations and headers for ARM based micro-controllers
+
+## Overview
+
+Common implementations and headers for ARM based micro-controllers

cpu/arm7_common/include/arm7_common.h

@@ -7,9 +7,7 @@
 #pragma once
 
 /**
- * @defgroup    cpu_arm7_common ARM7 CPU common
- * @brief       Common implementations and headers for ARM based micro-controllers
- * @ingroup     cpu
+ * @ingroup     cpu_arm7_common
  * @{
  */
 

cpu/cortexm_common/doc.md

@@ -0,0 +1,8 @@
+@defgroup    cpu_cortexm_common ARM Cortex-M common
+@ingroup     cpu
+@brief       Common implementations and headers for Cortex-M family based
+             micro-controllers
+
+## Overview
+
+Common implementations and headers for Cortex-M family based micro-controllers

cpu/cortexm_common/include/cpu.h

@@ -6,10 +6,7 @@
 #pragma once
 
 /**
- * @defgroup    cpu_cortexm_common ARM Cortex-M common
- * @ingroup     cpu
- * @brief       Common implementations and headers for Cortex-M family based
- *              micro-controllers
+ * @ingroup     cpu_cortexm_common
  * @{
  *
  * @file
@@ -88,7 +85,7 @@
 static inline void cortexm_init_fpu(void)
 {
     /* initialize the FPU on Cortex-M4F CPUs */
 #if (defined(CPU_CORE_CORTEX_M33) || defined(CPU_CORE_CORTEX_M4F) || defined(CPU_CORE_CORTEX_M7)) && defined(MODULE_CORTEXM_FPU)
     /* give full access to the FPU */
     SCB->CPACR |= (uint32_t)CORTEXM_SCB_CPACR_FPU_ACCESS_FULL;
 #endif
@@ -237,7 +234,7 @@
  * This function can be used to check for memory size,
  * peripherals availability, etc.
  *
  * @param[in]	address     Address to check
  * @return                  true if address is valid
  */
 bool cpu_check_address(volatile const char *address);