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/arch/arm/mach-omap2/emif-common.c b/arch/arm/mach-omap2/emif-common.c
index 8bc4fbb..312f868 100644
--- a/arch/arm/mach-omap2/emif-common.c
+++ b/arch/arm/mach-omap2/emif-common.c
@@ -21,6 +21,7 @@
 #include <asm/utils.h>
 #include <linux/compiler.h>
 #include <asm/ti-common/ti-edma3.h>
+#include <linux/delay.h>
 
 static int emif1_enabled = -1, emif2_enabled = -1;