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

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

Signed-off-by: Tom Rini <trini@konsulko.com>

arch/xtensa/cpu/cpu.c

@@ -8,7 +8,7 @@
  * CPU specific code
  */
 
-#include <common.h>
+#include <config.h>
 #include <command.h>
 #include <init.h>
 #include <vsprintf.h>

arch/xtensa/cpu/exceptions.c

@@ -10,12 +10,12 @@
  *  (Note that alloca is a special case and handled in start.S)
  */
 
-#include <common.h>
 #include <command.h>
 #include <irq_func.h>
 #include <asm/ptrace.h>
 #include <asm/string.h>
 #include <asm/regs.h>
+#include <vsprintf.h>
 
 typedef void (*handler_t)(struct pt_regs *);
 

arch/xtensa/lib/bootm.c

@@ -4,7 +4,6 @@
  * (C) Copyright 2014 Cadence Design Systems Inc.
  */
 
-#include <common.h>
 #include <bootm.h>
 #include <bootstage.h>
 #include <command.h>

arch/xtensa/lib/cache.c

@@ -4,7 +4,6 @@
  * (C) Copyright 2014 - 2016 Cadence Design Systems Inc.
  */
 
-#include <common.h>
 #include <cpu_func.h>
 #include <asm/cache.h>
 

arch/xtensa/lib/time.c

@@ -3,7 +3,6 @@
  * (C) Copyright 2008 - 2013 Tensilica Inc.
  */
 
-#include <common.h>
 #include <clock_legacy.h>
 #include <time.h>
 #include <asm/global_data.h>