powerpc: Fix some #ifndef __KERNEL__ that should be #ifdef

Grrr....

Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-powerpc/seccomp.h b/include/asm-powerpc/seccomp.h
index cc8137b..853765e 100644
--- a/include/asm-powerpc/seccomp.h
+++ b/include/asm-powerpc/seccomp.h
@@ -1,7 +1,7 @@
 #ifndef _ASM_POWERPC_SECCOMP_H
 #define _ASM_POWERPC_SECCOMP_H
 
-#ifndef __KERNEL__
+#ifdef __KERNEL__
 #include <linux/thread_info.h>
 #endif