[ALSA] oxygen: reduce SPI clock frequency for AK4396/WM8785

According to the datasheets, the SPI clock cycle must be at least 200 ns
for the AK4396 and the WM8785, so we cannot use the default 160 ns.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/oxygen/oxygen_io.c b/sound/pci/oxygen/oxygen_io.c
index ebafc65..d0cdce0 100644
--- a/sound/pci/oxygen/oxygen_io.c
+++ b/sound/pci/oxygen/oxygen_io.c
@@ -174,7 +174,7 @@
 {
 	unsigned int count;
 
-	/* should not need more than 3.84 us (24 * 160 ns) */
+	/* should not need more than 7.68 us (24 * 320 ns) */
 	count = 10;
 	while ((oxygen_read8(chip, OXYGEN_SPI_CONTROL) & OXYGEN_SPI_BUSY)
 	       && count > 0) {