Amend the layout of kevent32 on powerpc where uint64_t has 8-byte

alignment.

Reported,tested and assertion updates by:	andreast
Sponsored by:	The FreeBSD Foundation

sys/compat/freebsd32/freebsd32.h

@@ -141,8 +141,14 @@ struct kevent32 {
 	short		filter;		/* filter for event */
 	u_short		flags;
 	u_int		fflags;
+#ifdef __powerpc__
+	uint32_t	pad0;
+#endif
 	int32_t		data1, data2;
 	uint32_t	udata;		/* opaque user data identifier */
+#ifdef __powerpc__
+	uint32_t	pad1;
+#endif
 	uint32_t	ext64[8];
 };
 

sys/compat/freebsd32/freebsd32_misc.c

@@ -119,7 +119,11 @@ CTASSERT(sizeof(struct statfs32) == 256);
 CTASSERT(sizeof(struct rusage32) == 72);
 #endif
 CTASSERT(sizeof(struct sigaltstack32) == 12);
+#ifdef __powerpc__
+CTASSERT(sizeof(struct kevent32) == 64);
+#else
 CTASSERT(sizeof(struct kevent32) == 56);
+#endif
 CTASSERT(sizeof(struct iovec32) == 8);
 CTASSERT(sizeof(struct msghdr32) == 28);
 #ifdef __amd64__