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/lib/reset.c b/arch/arm/lib/reset.c
index 65b4be2..4f1a768 100644
--- a/arch/arm/lib/reset.c
+++ b/arch/arm/lib/reset.c
@@ -24,6 +24,7 @@
 #include <command.h>
 #include <cpu_func.h>
 #include <irq_func.h>
+#include <linux/delay.h>
 
 __weak void reset_misc(void)
 {