syslog: log kernel message to kern.log

note config/etc/* is copied through lfs/stage2
so changes made in config/etc/* requires to
rm stage2 build log to rebuild stage2.

Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>

config/etc/syslog.conf

@@ -1,6 +1,6 @@
 # Log all kernel messages to the console.
 # Logging much else clutters up the screen.
-#kern.*							/dev/console
+kern.*								-/var/log/kern.log
 
 # Log anything (except mail) of level info or higher.
 # Don't log private authentication messages!

config/rootfiles/common/sysklogd

@@ -6,3 +6,4 @@ usr/sbin/syslogd
 #usr/share/man/man8/syslogd.8
 var/log/dhcpcd.log
 var/log/messages
+var/log/kern.log

lfs/sysklogd

@@ -76,8 +76,8 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 
 	cd $(DIR_APP) && make $(MAKETUNING)
 	cd $(DIR_APP) && make install
-	touch /var/log/{dhcpcd.log,messages}
-	chmod 664 /var/log/{dhcpcd.log,messages}
-	chown 0:105 /var/log/{dhcpcd.log,messages}
+	touch /var/log/{dhcpcd.log,messages,kern.log}
+	chmod 664 /var/log/{dhcpcd.log,messages,kern.log}
+	chown 0:105 /var/log/{dhcpcd.log,messages,kern.log}
 	@rm -rf $(DIR_APP)
 	@$(POSTBUILD)