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-tegra/cmd_enterrcm.c b/arch/arm/mach-tegra/cmd_enterrcm.c
index 110d441..25df31a 100644
--- a/arch/arm/mach-tegra/cmd_enterrcm.c
+++ b/arch/arm/mach-tegra/cmd_enterrcm.c
@@ -30,6 +30,7 @@
 #include <irq_func.h>
 #include <asm/arch/tegra.h>
 #include <asm/arch-tegra/pmc.h>
+#include <linux/delay.h>
 
 static int do_enterrcm(struct cmd_tbl *cmdtp, int flag, int argc,
 		       char *const argv[])