xtensa: clean up platform headers

Drop include directives for irrelevant headers in asm/platform.h and its
users. Sort remaining headers.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

arch/xtensa/include/asm/platform.h

@@ -12,8 +12,6 @@
 #define _XTENSA_PLATFORM_H
 
 #include <linux/types.h>
-#include <linux/pci.h>
-
 #include <asm/bootparam.h>
 
 /*

arch/xtensa/kernel/platform.c

@@ -12,12 +12,10 @@
  * Chris Zankel <chris@zankel.net>
  */
 
+#include <linux/printk.h>
 #include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/time.h>
 #include <asm/platform.h>
 #include <asm/timex.h>
-#include <asm/param.h>		/* HZ */
 
 #define _F(r,f,a,b)							\
 	r __platform_##f a b;                                   	\

arch/xtensa/platforms/iss/setup.c

@@ -11,23 +11,13 @@
  * Copyright 2001 - 2005 Tensilica Inc.
  * Copyright 2017 Cadence Design Systems Inc.
  */
-#include <linux/memblock.h>
-#include <linux/stddef.h>
-#include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/reboot.h>
-#include <linux/kdev_t.h>
-#include <linux/types.h>
-#include <linux/major.h>
-#include <linux/blkdev.h>
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/stringify.h>
+#include <linux/kernel.h>
 #include <linux/notifier.h>
+#include <linux/printk.h>
+#include <linux/string.h>
 
 #include <asm/platform.h>
-#include <asm/bootparam.h>
 #include <asm/setup.h>
 
 #include <platform/simcall.h>

arch/xtensa/platforms/xtfpga/setup.c

@@ -24,6 +24,7 @@
 #include <linux/of.h>
 #include <linux/clk-provider.h>
 #include <linux/of_address.h>
+#include <linux/slab.h>
 
 #include <asm/timex.h>
 #include <asm/processor.h>