fix asm-x86/{posix_types,unistd}.h

Jeff Chua reported that:

Commit e40c0fe6
(x86: cleanup duplicate includes) turned the userspace
asm-x86/posix_types.h and asm-x86/unistd.h headers into
empty files.

This patch reverts these bogus changes.
Reported-by: Jeff Chua <jeff.chua.linux@gmail.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

include/asm-x86/posix_types.h

 #ifdef __KERNEL__
-# if defined(CONFIG_X86_32) || defined(__i386__)
+# ifdef CONFIG_X86_32
+#  include "posix_types_32.h"
+# else
+#  include "posix_types_64.h"
+# endif
+#else
+# ifdef __i386__
 #  include "posix_types_32.h"
 # else
 #  include "posix_types_64.h"

include/asm-x86/unistd.h

 #ifdef __KERNEL__
-# if defined(CONFIG_X86_32) || defined(__i386__)
+# ifdef CONFIG_X86_32
+#  include "unistd_32.h"
+# else
+#  include "unistd_64.h"
+# endif
+#else
+# ifdef __i386__
 #  include "unistd_32.h"
 # else
 #  include "unistd_64.h"