* Market lacks direction ahead of BOJ easing decision * Softbank supports with gains after huge dividend hike * Nintendo loses 6 pct after first operating loss By Sophie Knight TOKYO, April 27 (Reuters) - Japan's Nikkei inched down on Friday after Spain suffered with a two-notch credit rating cut, but investor attention was fixed firmly on the Bank of Japan to see if it announces fresh easing measures later in line with market forecasts. The Nikkei share average dipped to