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/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index e455d8b..d3167f6 100644
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -5,6 +5,7 @@
 
 #include <common.h>
 #include <command.h>
+#include <init.h>
 #include <linux/compiler.h>
 #include <fsl_errata.h>
 #include <asm/processor.h>