src/platforms: move all headers to platforms/common/include/px4_platform_common

and remove the px4_ prefix, except for px4_config.h.

command to update includes:
for k in app.h atomic.h cli.h console_buffer.h defines.h getopt.h i2c.h init.h log.h micro_hal.h module.h module_params.h param.h param_macros.h posix.h sem.h sem.hpp shmem.h shutdown.h tasks.h time.h workqueue.h; do for i in $(grep -rl 'include <px4_'$k src platforms boards); do sed -i 's/#include <px4_'$k'/#include <px4_platform_common\/'$k/ $i; done; done
for in $(grep -rl 'include <px4_config.h' src platforms boards); do sed -i 's/#include <px4_config.h/#include <px4_platform_common\/px4_config.h'/ $i; done

Transitional headers for submodules are added (px4_{defines,log,time}.h)

src/drivers/uavcannode/resources.cpp

@@ -32,7 +32,7 @@
  *
  ****************************************************************************/
 
-#include <px4_config.h>
+#include <px4_platform_common/px4_config.h>
 #include <nuttx/progmem.h>
 #include <nuttx/compiler.h>
 #include <stdlib.h>

src/drivers/uavcannode/sim_controller.cpp

@@ -32,7 +32,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  *
  ****************************************************************************/
-#include <px4_config.h>
+#include <px4_platform_common/px4_config.h>
 
 #include <syslog.h>
 

src/drivers/uavcannode/uavcannode_main.cpp

@@ -30,15 +30,15 @@
  *
  ****************************************************************************/
 
-#include <px4_config.h>
-#include <px4_log.h>
-#include <px4_tasks.h>
+#include <px4_platform_common/px4_config.h>
+#include <px4_platform_common/log.h>
+#include <px4_platform_common/tasks.h>
 
 #ifdef __PX4_NUTTX
 #include <nuttx/clock.h>
 #
 #else
-#include <px4_workqueue.h>
+#include <px4_platform_common/workqueue.h>
 #endif
 
 #include <cstdlib>

src/drivers/uavcannode/uavcannode_main.hpp

@@ -33,7 +33,7 @@
 
 #pragma once
 
-#include <px4_config.h>
+#include <px4_platform_common/px4_config.h>
 #include <uavcan_stm32/uavcan_stm32.hpp>
 #include <drivers/device/device.h>
 #include <uavcan/protocol/global_time_sync_slave.hpp>

src/drivers/uavcannode/uavcannode_params.c

@@ -35,7 +35,7 @@
  * @author Pavel Kirienko <pavel.kirienko@gmail.com>
  */
 
-#include <px4_config.h>
+#include <px4_platform_common/px4_config.h>
 #include <parameters/param.h>
 
 /**