HID: export headers properly

I have people whining about using these headers in userspace, and they have
__KERNEL__ markings which implies they're supposed to be exported. I also
added the required linux/types.h include to hidraw.h since it uses the __u##
kernel types.

Signed-off-by: Mike Frysinger <[e-mail]>
Cc: Jiri Kosina <[e-mail]>
Cc: Dmitry Torokhov <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Jiri Kosina <[e-mail]>

include/linux/Kbuild

···
 unifdef-y += hdlc.h
 unifdef-y += hdreg.h
 unifdef-y += hdsmart.h
+unifdef-y += hid.h
 unifdef-y += hiddev.h
+unifdef-y += hidraw.h
 unifdef-y += hpet.h
 unifdef-y += i2c.h
 unifdef-y += i2c-dev.h

include/linux/hidraw.h

···
  */
 
 #include <linux/hid.h>
+#include <linux/types.h>
 
 struct hidraw_report_descriptor {
 	__u32 size;