Preserve timestamps when copying log files

Add timestamp preservation when copying log files.

packages/bsp/common/usr/lib/armbian/armbian-ramlog

@@ -152,8 +152,9 @@ case "$1" in
 		cd $HDD_LOG
 		find . -type f -print | grep -E -v "(\.gz|\.xz|\.[0-9]|armbian-ramlog)|\.journal" | while IFS= read -r  file
 		do
-	    		dest="/var/log/$file"
-	    		cat $file > $dest	    
+			dest="/var/log/$file"
+			cat $file > $dest
+			touch -r $file $dest
 		done
 		;;
 	*)