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/cpu/arm926ejs/armada100/cpu.c b/arch/arm/cpu/arm926ejs/armada100/cpu.c
index 0c81de7..96726b3 100644
--- a/arch/arm/cpu/arm926ejs/armada100/cpu.c
+++ b/arch/arm/cpu/arm926ejs/armada100/cpu.c
@@ -8,6 +8,7 @@
 
 #include <common.h>
 #include <cpu_func.h>
+#include <init.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/armada100.h>