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/controllib/block/Block.cpp

@@ -40,8 +40,11 @@
 #include "Block.hpp"
 #include "BlockParam.hpp"
 
+#include <cstdio>
 #include <cstring>
 
+#include <px4_platform_common/log.h>
+
 namespace control
 {
 

src/lib/controllib/block/BlockParam.cpp

@@ -39,10 +39,13 @@
 
 #include "BlockParam.hpp"
 
+#include <cstdio>
 #include <cstring>
 
 #include <containers/List.hpp>
 
+#include <px4_platform_common/log.h>
+
 namespace control
 {