staging: comedi: shrink comedi_compat32.h

"comedi_compat32.h" #include's <linux/compat.h>, but that is only needed
by "comedi_compat32.c" so move the #include to that file.  Also,
"comedi_compat.h" doesn't really need the '#include <linux/fs.h>' just
to declare 'struct file' as it only uses it to construct a pointer to
that type.  Replace that #include with an incomplete declaration of
'struct file' and move that #include into "comedi_compat32.c".
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/comedi_compat32.c

@@ -26,6 +26,8 @@
 
 #define __NO_VERSION__
 #include <linux/uaccess.h>
+#include <linux/compat.h>
+#include <linux/fs.h>
 #include "comedi.h"
 #include "comedi_compat32.h"
 

drivers/staging/comedi/comedi_compat32.h

@@ -27,11 +27,9 @@
 #ifndef _COMEDI_COMPAT32_H
 #define _COMEDI_COMPAT32_H
 
-#include <linux/compat.h>
-#include <linux/fs.h>
-
 #ifdef CONFIG_COMPAT
 
+struct file;
 extern long comedi_compat_ioctl(struct file *file, unsigned int cmd,
 				unsigned long arg);