libvulkan: Rev 8 of ANDROID_native_buffer

This change ramps up the ANDROID_native_buffer spec version becasue of
the new behavior introduced to support the new structure added in
VK_KHR_swapchain v69. This change also advertise the swapchain spec
verison based upon the ANDROID_native_buffer version the drivers are
reporting.

Bug: 130182551
Test: CtsDeqpTestCases
Change-Id: Ic95489dac883726d10e1a949875a576116622f3c