ARM: tegra: paz00: fix wrong SD1 power gpio

The power gpio for the external memory card was specified wrongly.
Replace it with the correct value (tested with warmboot with fastboot).

Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>