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/lib/i8254.c b/arch/x86/lib/i8254.c
index a8d1db1..8a590c6 100644
--- a/arch/x86/lib/i8254.c
+++ b/arch/x86/lib/i8254.c
@@ -4,10 +4,10 @@
  * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
  */
 
-#include <common.h>
 #include <asm/io.h>
 #include <asm/i8254.h>
 #include <asm/ibmpc.h>
+#include <linux/errno.h>
 
 #define TIMER1_VALUE		18	/* 15.6us */
 #define BEEP_FREQUENCY_HZ	440