CRYPTO: padlock: Fix spurious ECB page fault

[CRYPTO] padlock: Fix spurious ECB page fault

[ Upstream commit: d4a7dd8e ]
[ Upstream commit: 490fe3f0 ]

The xcryptecb instruction always processes an even number of blocks so
we need to ensure th existence of an extra block if we have to process
an odd number of blocks.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>