Limit use of vkEnumerateInstanceVersion to VK_VERSION_1_1 On devices where vulkan 1.1 is not supported, calling vkGetInstanceProcAddr(VK_NULL_HANDLE, "vkEnumerateInstanceVersion") results in error: invalid vkGetInstanceProcAddr(VK_NULL_HANDLE, "vkEnumerateInstanceVersion") call. Limit vkGetInstanceProcAddr(VK_NULL_HANDLE, "vkEnumerateInstanceVersion") to VK_VERSION_1_1. Bug: chromium:409350833 Change-Id: I313585b133967d32fba597013dcfa846609b0f74 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6443937 Commit-Queue: Yuxin Hu <yuxinhu@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Auto-Submit: Yuxin Hu <yuxinhu@google.com>