s390x/tcg: Fix VERIM with 32/64 bit elements

s390x/tcg: Fix VERIM with 32/64 bit elements

Wrong order of operands. The constant always comes last. Makes QEMU crash
reliably on specific git fetch invocations.

Reported-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190814151242.27199-1-david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Fixes: 5c4b0ab460ef ("s390x/tcg: Implement VECTOR ELEMENT ROTATE AND INSERT UNDER MASK")
Cc: qemu-stable@nongnu.org
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
(cherry picked from commit 25bcb45d1b81d22634daa2b1a2d8bee746ac129b)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>