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/phy/marvell/comphy_cp110.c b/drivers/phy/marvell/comphy_cp110.c
index ddfacf6..15e8004 100644
--- a/drivers/phy/marvell/comphy_cp110.c
+++ b/drivers/phy/marvell/comphy_cp110.c
@@ -9,6 +9,7 @@
 #include <asm/io.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/soc.h>
+#include <linux/delay.h>
 
 #include "comphy_core.h"
 #include "comphy_hpipe.h"