greybus: drop some unnecessary headers

There's no need to include anything other than "greybus.h" in
"connection.c".  Same thing in "core.c" and "manifest.c" and
"svc.c".  Some files need headers included, but most come along
with "greybus.h".
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/connection.c

@@ -7,9 +7,6 @@
  * Released under the GPLv2 only.
  */
 
-#include <linux/atomic.h>
-
-#include "kernel_ver.h"
 #include "greybus.h"
 
 static DEFINE_SPINLOCK(gb_connections_lock);

drivers/staging/greybus/core.c

@@ -9,13 +9,6 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#include <linux/types.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/device.h>
-
 #include "greybus.h"
 
 /* Allow greybus to be disabled at boot if needed */

drivers/staging/greybus/es1.c

@@ -6,16 +6,11 @@
  *
  * Released under the GPLv2 only.
  */
-#include <linux/kernel.h>
-#include <linux/module.h>
 #include <linux/kthread.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
 #include <linux/sizes.h>
 #include <linux/usb.h>
 #include <linux/kfifo.h>
 #include <linux/debugfs.h>
-#include <linux/uaccess.h>
 #include <asm/unaligned.h>
 
 #include "greybus.h"

drivers/staging/greybus/es2.c

@@ -6,16 +6,11 @@
  *
  * Released under the GPLv2 only.
  */
-#include <linux/kernel.h>
-#include <linux/module.h>
 #include <linux/kthread.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
 #include <linux/sizes.h>
 #include <linux/usb.h>
 #include <linux/kfifo.h>
 #include <linux/debugfs.h>
-#include <linux/uaccess.h>
 #include <asm/unaligned.h>
 
 #include "greybus.h"

drivers/staging/greybus/manifest.c

@@ -9,8 +9,6 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#include <linux/err.h>
-
 #include "greybus.h"
 
 static const char *get_descriptor_type_string(u8 type)

drivers/staging/greybus/svc.c

@@ -7,12 +7,7 @@
  * Released under the GPLv2 only.
  */
 
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-
 #include "greybus.h"
-#include "greybus_protocols.h"
 
 struct gb_svc {
 	struct gb_connection	*connection;