anv/wayland: fix assert typo

Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

src/intel/vulkan/anv_wsi_wayland.c

@@ -116,7 +116,7 @@ wl_drm_format_for_vk_format(VkFormat vk_format, bool alpha)
 #endif
 
    default:
-      assert("!Unsupported Vulkan format");
+      assert(!"Unsupported Vulkan format");
       return 0;
    }
 }