staging: goldfish: (coding style) Add spaces around the "+" to conform to checkpatch

Added a space around the "+" at: "reg_base+addr2" to clear up a checkpatch check.
Signed-off-by: Christian Colic <colic.christian@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/goldfish/goldfish_audio.c

@@ -63,7 +63,7 @@ struct goldfish_audio {
 #define AUDIO_READ(data, addr)		(readl(data->reg_base + addr))
 #define AUDIO_WRITE(data, addr, x)	(writel(x, data->reg_base + addr))
 #define AUDIO_WRITE64(data, addr, addr2, x)	\
-	(gf_write_dma_addr((x), data->reg_base + addr, data->reg_base+addr2))
+	(gf_write_dma_addr((x), data->reg_base + addr, data->reg_base + addr2))
 
 /*
  *  temporary variable used between goldfish_audio_probe() and