video: tegra: host: use strcmp in nvhost_bus_match

- replace the usage of strncmp with strcmp in
nvhost_bus_match()
- strncmp was needed when we had device name as
<name.ip-version>. but now the device name is <name>
which matches with the driver name.
- multiple devices get bind with the same driver using
id_table which uses .version field as an index in id_table

Change-Id: If0b6f0ee18626d5e7ff801b8515ef5168069c3f2
Signed-off-by: Mayuresh Kulkarni <mkulkarni@nvidia.com>
Reviewed-on: http://git-master/r/117953
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Ken Adams <kadams@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
(cherry picked from commit ece74a0888415460a005d52bcf2d5f6cf535597d)
Reviewed-on: http://git-master/r/123475
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>