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/cmd/pci.c b/cmd/pci.c
index 0043471..b2174e2 100644
--- a/cmd/pci.c
+++ b/cmd/pci.c
@@ -18,6 +18,7 @@
 #include <command.h>
 #include <console.h>
 #include <dm.h>
+#include <init.h>
 #include <asm/processor.h>
 #include <asm/io.h>
 #include <pci.h>