Remove include <log.h> from defines.h

The reason for this is that log.h includes drv_hrt.h which sucks in
half the project's include files with it, which causes strange build
issues

src/lib/drivers/device/CDev.cpp

@@ -41,6 +41,7 @@
 
 #include <cstring>
 
+#include <px4_platform_common/log.h>
 #include <px4_platform_common/posix.h>
 
 namespace device

src/lib/drivers/device/Device.hpp

@@ -40,9 +40,12 @@
 #ifndef _DEVICE_DEVICE_HPP
 #define _DEVICE_DEVICE_HPP
 
+#include <cstdio>
+
 /*
  * Includes here should only cover the needs of the framework definitions.
  */
+#include <px4_platform_common/log.h>
 #include <px4_platform_common/px4_config.h>
 #include <px4_platform_common/posix.h>
 

src/lib/drivers/led/led.cpp

@@ -37,6 +37,7 @@
  * LED driver to control the onboard LED(s) via ioctl interface.
  */
 
+#include <px4_platform_common/log.h>
 #include <px4_platform_common/px4_config.h>
 #include <lib/cdev/CDev.hpp>
 #include <drivers/drv_board_led.h>