vulkan: add a wrapper for hwvulkan_device_t
am: 31b2e4f01d

* commit '31b2e4f01d31aae107340cbc4221b8d49fb42767':
  vulkan: add a wrapper for hwvulkan_device_t

Change-Id: I4d64d13427218c437babb31d85982c438ed7f2af