anv/meta: Use blitter API in do_buffer_copy()
anv/meta: Use blitter API in do_buffer_copy()

v2: Keep pitch in units of bytes (Jason)

Signed-off-by: Nanley Chery <d78cd5d33e98a5581566f188959f731bd0b1c0fd@intel.com>
Reviewed-by: Jason Ekstrand <b186559eaedf698788888c8a2559b4efb4db10d6@intel.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler