ufs: add TC G210 platform driver

This patch adds a glue platform driver for the Synopsys G210 Test Chip.

Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>