[PATCH v2] virtio-spec: Fix wrong bit number of device status

[Amos Kong <akong@redhat.com>]

qemu-kvm/hw/virtio_config.h:
 #define VIRTIO_CONFIG_S_ACKNOWLEDGE     1
 #define VIRTIO_CONFIG_S_DRIVER          2
 #define VIRTIO_CONFIG_S_DRIVER_OK       4
 #define VIRTIO_CONFIG_S_FAILED          0x80

virtio-spec:
ACKNOWLEDGE(1) :
DRIVER(2)      :
DRIVER_OK(3)   :
FAILED(128)    :

The spec refers to bit numbers and the headers use absolute numbers,
they are not consistent.

it shoule be 'FAILED(8)'.
2^(8-1) = 128

Changes from V1:
- Fix wrong patch body

Signed-off-by: Amos Kong <akong@redhat.com>
---
 virtio-spec.lyx |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/virtio-spec.lyx b/virtio-spec.lyx
index 448af76..1fc3e59 100644
--- a/virtio-spec.lyx
+++ b/virtio-spec.lyx
@@ -1552,7 +1552,7 @@ FAILED
 \begin_inset space ~
 \end_inset
 
-(128) Indicates that something went wrong in the guest, and it has given
+(8) Indicates that something went wrong in the guest, and it has given
  up on the device.
  This could be an internal error, or the driver didn't like the device for
  some reason, or even a fatal error during device operation.
-- 
1.7.1