configure.ac: bump libdrm_freedreno requirement

We need 2.4.57 for fd_bo_dmabuf() / fd_bo_from_dmabuf().

Signed-off-by: Rob Clark <robclark@freedesktop.org>
gm107/ir: add dnz emission for fmul

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.3" <mesa-stable@lists.freedesktop.org>
gk110/ir: add dnz flag emission for fmul/fmad

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.2 10.3" <mesa-stable@lists.freedesktop.org>
gm107/ir: don't generate texbars

Latest blob drivers don't appear to, perhaps they were unncessary there.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.3" <mesa-stable@lists.freedesktop.org>
Revert "configure: ask vdpau.pc for the default location of the vdpau drivers"

This reverts commit bbe6f7f865cd4316b5f885507ee0b128a20686eb.

This change broke the usual assumption that setting a prefix will cause
files to be installed into that prefix. Restore that assumption before
people's system installs are accidentally overwritten, and everyone
starts having to add a --with-libvdpau-dir as a hack to work around this.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>