cpu/cortexm_common: Make cpu.h IWYU clean

cpu/cortexm_common/include/cpu.h

@@ -30,12 +30,10 @@
 #ifndef CPU_H
 #define CPU_H
 
-#include <stdio.h>
-
 #include "irq.h"
 #include "sched.h"
 #include "thread.h"
-#include "cpu_conf.h"
+#include "cpu_conf.h" /* IWYU pragma: export */
 
 #ifdef __cplusplus
 extern "C" {
@@ -94,7 +92,7 @@
 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
@@ -243,7 +241,7 @@
  * 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);

cpu/esp32/periph/gpio_ll.c

@@ -24,9 +24,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <stdbool.h>
-#include <string.h>
 
-#include "log.h"
 #include "irq.h"
 #include "periph/gpio_ll.h"
 
@@ -39,8 +37,9 @@
 #include "esp_idf_api/gpio.h"
 
 #ifdef MODULE_FMT
-#include "fmt.h"
+#  include "fmt.h"
 #else
+#  include <stdio.h>
 static inline void print_str(const char *str)
 {
     fputs(str, stdout);

cpu/gd32v/periph/gpio_ll.c

@@ -28,8 +28,9 @@
 #include "debug.h"
 
 #ifdef MODULE_FMT
-#include "fmt.h"
+#  include "fmt.h"
 #else
+#  include <stdio.h>
 static inline void print_str(const char *str)
 {
     fputs(str, stdout);

cpu/nrf5x_common/periph/gpio_ll.c

@@ -37,8 +37,9 @@
 #include "periph_conf.h"
 
 #ifdef MODULE_FMT
-#include "fmt.h"
+#  include "fmt.h"
 #else
+#  include <stdio.h>
 static inline void print_str(const char *str)
 {
     fputs(str, stdout);

cpu/sam0_common/periph/gpio_ll.c

@@ -45,8 +45,9 @@
 #include "periph/gpio_ll.h"
 
 #ifdef MODULE_FMT
-#include "fmt.h"
+#  include "fmt.h"
 #else
+#  include <stdio.h>
 static inline void print_str(const char *str)
 {
     fputs(str, stdout);

cpu/stm32/periph/gpio_ll.c

@@ -34,8 +34,9 @@
 #include "periph/gpio_ll.h"
 
 #ifdef MODULE_FMT
-#include "fmt.h"
+#  include "fmt.h"
 #else
+#  include <stdio.h>
 static inline void print_str(const char *str)
 {
     fputs(str, stdout);

drivers/periph_common/gpio_ll.c

@@ -6,8 +6,6 @@
  * directory for more details.
  */
 
-#include <stdio.h>
-
 #include "periph/gpio_ll.h"
 
 /* Optimizing for low stack usage by not using printf(), which on newlib is
@@ -19,8 +17,9 @@
  * printf().
  */
 #ifdef MODULE_FMT
-#include "fmt.h"
+#  include "fmt.h"
 #else
+#  include <stdio.h>
 static inline void print_str(const char *str)
 {
     fputs(str, stdout);

examples/pio_blink/main.c

@@ -9,6 +9,8 @@
 #include "board.h"
 #include "periph/pio.h"
 
+#include <stdio.h>
+
 /* see blink.c */
 pio_program_t pio_blink_export_program(void);
 

pkg/openwsn/include/openwsn_log.h

@@ -22,6 +22,8 @@
 #ifndef OPENWSN_LOG_H
 #define OPENWSN_LOG_H
 
+#include <stdio.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -67,11 +69,11 @@
 #define LOG(level, ...) do { \
         _Pragma("clang diagnostic push") \
         _Pragma("clang diagnostic ignored \"-Wtautological-compare\"") \
         if ((level) <= LOG_LEVEL) log_write((level), __VA_ARGS__); } while (0U) \
         _Pragma("clang diagnostic pop")
 #else
 #define LOG(level, ...) do { \
         if ((level) <= LOG_LEVEL) log_write((level), __VA_ARGS__); } while (0U)
 #endif /* __clang__ */
 
 /**