common: Drop linux/delay.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/sound/hda_codec.c b/drivers/sound/hda_codec.c
index 92e1945..b59c63e 100644
--- a/drivers/sound/hda_codec.c
+++ b/drivers/sound/hda_codec.c
@@ -15,6 +15,7 @@
 #include <sound.h>
 #include <asm/io.h>
 #include <dt-bindings/sound/azalia.h>
+#include <linux/delay.h>
 
 /**
  * struct hda_regs - HDA registers