Add VK1.1 entries to NDK libvulkan and fix a bug

vkEnumeratePhysicalDeviceGroups would crash when the driver only
supports VK1.0 and doesn't have vkEnumeratePhysicalDeviceGroups. In that
case, we synthesize a trivial device group for each physical device.

Bug: b/38269556
Bug: b/71713526
Test: adb shell cmd gpu vkjson
Change-Id: I66ae53744a3d37134f23f98c8e33769f185e44dd