Enable va-driver only in Fedora

Upstream, va-drivers are symlinks to libgallium [1].

The mesa-va-driver package is not distributed in CentOS/RHEL because it
is not in the allow-list. However, now that its functionality is part of
libgallium, it is required to disable it explicitly.

Make "with_va" a Fedora only option.

[1] b51ea6a445

Resolves: https://issues.redhat.com/browse/RHEL-144489

mesa.spec

@@ -4,11 +4,11 @@
 %global with_vmware 1
 %global with_vulkan_hw 1
 %global with_vdpau 1
-%global with_va 1
 %if !0%{?rhel}
 %global with_r300 1
 %global with_r600 1
 %global with_opencl 1
+%global with_va 1
 %endif
 %if !0%{?rhel} || 0%{?rhel} >= 9
 %global with_nvk %{with_vulkan_hw}
@@ -82,7 +82,7 @@ Name:           mesa
 Summary:        Mesa graphics libraries
 %global ver 25.2.7
 Version:        %{lua:ver = string.gsub(rpm.expand("%{ver}"), "-", "~"); print(ver)}
-Release:        2%{?dist}
+Release:        3%{?dist}
 License:        MIT AND BSD-3-Clause AND SGI-B-2.0
 URL:            http://www.mesa3d.org
 
@@ -882,6 +882,10 @@ popd
 %endif
 
 %changelog
+* Wed Jan 28 2026 José Expósito <jexposit@redhat.com> - 25.2.7-3
+- Enable va-driver only in Fedora
+  Resolves: https://issues.redhat.com/browse/RHEL-144489
+
 * Tue Jan 6 2026 Jocelyn Falempe <jfalempe@redhat.com - 25.2.7-2
 - Resolves: https://issues.redhat.com/browse/RHEL-105157