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/tegra124/clock.c b/arch/arm/mach-tegra/tegra124/clock.c
index 4359093..79e67f5 100644
--- a/arch/arm/mach-tegra/tegra124/clock.c
+++ b/arch/arm/mach-tegra/tegra124/clock.c
@@ -17,6 +17,7 @@
 #include <asm/arch-tegra/timer.h>
 #include <div64.h>
 #include <fdtdec.h>
+#include <linux/delay.h>
 
 /*
  * Clock types that we can use as a source. The Tegra124 has muxes for the