[intel][vulkan] Lock around address space allocator

A thread may be submitting on a device's queue while another thread
is releasing command buffers on the same device.

MA-565 #comment

Test:
pixelbook:go/magma-tps#L1
nuc:go/magma-tps#C0

Change-Id: Ic97a1daf682862b650a9665beecb2bea059369a0
1 file changed