common: Move ll_boot_init() to init.h

This is an init-related function so belongs in that file. Move it.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c
index d626e38..dae0694 100644
--- a/arch/x86/cpu/cpu.c
+++ b/arch/x86/cpu/cpu.c
@@ -24,6 +24,7 @@
 #include <cpu_func.h>
 #include <dm.h>
 #include <errno.h>
+#include <init.h>
 #include <malloc.h>
 #include <syscon.h>
 #include <asm/acpi.h>