dt-bindings: tegra186: xhci and xudc: remove uphy

Tegra186 UPHY driver has been moved from kernel to bpmp-fw.

bug 200194202

Change-Id: I7f90a4c0b48733cb70cc424981ef5e26f3c54601
Signed-off-by: JC Kuo <jckuo@nvidia.com>
Reviewed-on: http://git-master/r/1182582
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Mark Kuo <mkuo@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Ashutosh Jha <ajha@nvidia.com>
2 files changed