of: add vendor prefix for Technologic Systems

Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>