logging: use util/log.h where possible

Preparation for a future commit where kernel's dependency
on logging.cpp is removed completely.

Replace usage of logging\.h with util/log\.h where it
suffices, and fix wrong includes according to iwyu.

src/kernel/chainparams.cpp

@@ -12,13 +12,13 @@
 #include <crypto/hex_base.h>
 #include <hash.h>
 #include <kernel/messagestartchars.h>
-#include <logging.h>
 #include <primitives/block.h>
 #include <primitives/transaction.h>
 #include <script/interpreter.h>
 #include <script/script.h>
 #include <uint256.h>
 #include <util/chaintype.h>
+#include <util/log.h>
 #include <util/strencodings.h>
 
 #include <algorithm>