x86: Remove <common.h> and add needed includes

Remove <common.h> from all x86 architecture files and when needed add
missing include files directly.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/x86/cpu/tangier/sdram.c b/arch/x86/cpu/tangier/sdram.c
index 374b262..7e1d290 100644
--- a/arch/x86/cpu/tangier/sdram.c
+++ b/arch/x86/cpu/tangier/sdram.c
@@ -3,12 +3,12 @@
  * Copyright (c) 2017 Intel Corporation
  */
 
-#include <common.h>
 #include <init.h>
 #include <log.h>
 #include <asm/e820.h>
 #include <asm/global_data.h>
 #include <asm/sfi.h>
+#include <asm/u-boot.h>
 #include <linux/printk.h>
 
 DECLARE_GLOBAL_DATA_PTR;