pvr: Fix dynamic desc offset storage
The index at which the dynamic descriptor offsets were being
stored was incorrect, leading to some offsets not being stored and
thus 0
being applied as the offset to the descriptors instead.
dEQP test fixed:
dEQP-VK.binding_model.shader_access.{primary,secondary}_cmd_buf
.uniform_buffer_dynamic
.{vertex,fragment,compute,vertex_fragment}
.multiple_discontiguous_descriptor_sets
.*_descriptor.offset_view_{,non}zero_dynamic_nonzero
Fixes: aa791961 ("pvr: Add support for dynamic buffers descriptors")
Signed-off-by: Karmjit Mahil Karmjit.Mahil@imgtec.com