i2c: tegra: Add HS mode support

i2c: tegra: Add HS mode support

Add support for High Speed (HS) mode transfers for Tegra194 and later
chips. While HS mode has been documented in the technical reference
manuals since Tegra20, the hardware implementation appears to be broken
on all chips prior to Tegra194.

When HS mode is not supported, set the frequency to FM+ instead.

Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Signed-off-by: Kartik Rajput <kkartik@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>