qed: Fix setting/clearing bit in completion bitmap

qed: Fix setting/clearing bit in completion bitmap

BugLink: http://bugs.launchpad.net/bugs/1614560
[ Upstream commit 59d3f1ceb69b54569685d0c34dff16a1e0816b19 ]

Slowpath completion handling is incorrectly changing
SPQ_RING_SIZE bits instead of a single one.

Fixes: 76a9a3642a0b ("qed: fix handling of concurrent ramrods")
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>