[PATCH] envctrl fixes

envctrl doesn't need unistd.h; moreover, since it declares errno static
gcc4 gets very unhappy about including unistd.h.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/sbus/char/bbc_envctrl.c

@@ -5,6 +5,7 @@
  */
 
 #define __KERNEL_SYSCALLS__
+static int errno;
 
 #include <linux/kernel.h>
 #include <linux/kthread.h>
@@ -13,8 +14,6 @@
 #include <linux/delay.h>
 #include <asm/oplib.h>
 #include <asm/ebus.h>
-static int errno;
-#include <asm/unistd.h>
 
 #include "bbc_i2c.h"
 #include "max1617.h"

drivers/sbus/char/envctrl.c

@@ -20,6 +20,7 @@
  */
 
 #define __KERNEL_SYSCALLS__
+static int errno;
 
 #include <linux/config.h>
 #include <linux/module.h>
@@ -38,9 +39,6 @@
 #include <asm/uaccess.h>
 #include <asm/envctrl.h>
 
-static int errno;
-#include <asm/unistd.h>
-
 #define ENVCTRL_MINOR	162
 
 #define PCF8584_ADDRESS	0x55