drm/nouveau: use static vidshift of 2 on volt 0x30 tables

Explanation is in the commit.  If anyone has an example of where this is
*not* the case, please report it!

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-03-31 10:39:44 +10:00
commit 475feffabe