common: Drop init.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/am33xx/chilisom.c b/arch/arm/mach-omap2/am33xx/chilisom.c
index 3942305..15b6b35 100644
--- a/arch/arm/mach-omap2/am33xx/chilisom.c
+++ b/arch/arm/mach-omap2/am33xx/chilisom.c
@@ -5,6 +5,7 @@
  */
 
 #include <common.h>
+#include <init.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/clk_synthesizer.h>
 #include <asm/arch/cpu.h>