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/board/gdsys/p1022/controlcenterd.c b/board/gdsys/p1022/controlcenterd.c
index e960fa7..73ce985 100644
--- a/board/gdsys/p1022/controlcenterd.c
+++ b/board/gdsys/p1022/controlcenterd.c
@@ -36,6 +36,7 @@
 #include <fsl_ddr_sdram.h>
 #include <asm/fsl_serdes.h>
 #include <asm/io.h>
+#include <linux/delay.h>
 #include <linux/libfdt.h>
 #include <fdt_support.h>
 #include <fsl_mdio.h>