Add GPIO hogs for GMI_WR_N buffers:
- tri-stating GMI_WR_N on SODIMM pin 99 nPWE
- not tri-stating GMI_WR_N on SODIMM pin 93 RDnWR
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>