Undo previous change. Mesa is wrong to not build radv for more arches,

and there's nothing x86-specific about this package, the Vulkan loader.

vulkan.spec

@@ -10,7 +10,7 @@
 
 Name:           vulkan
 Version:        1.1.73.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Vulkan loader and validation layers
 License:        ASL 2.0
 URL:            https://github.com/KhronosGroup
@@ -21,9 +21,6 @@ Patch0:         cmake_spirv_tools_commit.patch
 Patch1:         0003-layers-Don-t-set-an-rpath.patch
 Patch2:         0008-demos-Don-t-build-tri-or-cube.patch
 
-# mesa-vulkan-drivers and nvidia driver don't support other arch
-ExclusiveArch: x86_64 i686
-
 BuildRequires:  gcc-c++
 BuildRequires:  bison
 BuildRequires:  cmake3
@@ -148,6 +145,10 @@ chrpath -d %{buildroot}%{_bindir}/vulkaninfo
 %dir %{_datadir}/vulkan/implicit_layer.d/
 
 %changelog
+* Mon Jun 18 2018 Adam Jackson <ajax@redhat.com> - 1.1.73.0-4
+- Undo previous change. Mesa is wrong to not build radv for more arches,
+  and there's nothing x86-specific about this package, the Vulkan loader.
+
 * Sat Jun 16 2018 Leigh Scott <leigh123linux@googlemail.com> - 1.1.73.0-3
 - Make vulkan x86 only to match vulkan drivers