ARM: tegra: Regenerate default configuration

This patch was generated by running 'make tegra_defconfig' followed by
'make savedefconfig' with the v3.18-rc1 tag checked out. Two values go
away: CONFIG_SCSI is selected by CONFIG_ATA and CONFIG_SCSI_MULTI_LUN
was removed.

Signed-off-by: Thierry Reding <treding@nvidia.com>