RSX: add few nv4097 cmds and simplify case switch

Also added the following to rsx cmd

RSX: E {RSXThread} TODO: CELL_GCM_NV4097_SET_SHADER_PACKER(0x0)
RSX: E {RSXThread} TODO: CELL_GCM_NV4097_SET_TRANSFORM_BRANCH_BITS(0x0)
RSX: E {RSXThread} TODO: CELL_GCM_NV4097_SET_CYLINDRICAL_WRAP(0x0)