slimbus: ngd: add v2.1.0 compatible

This patch adds compatible for SlimBus Controller on SDM845.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200312152510.12224-1-srinivas.kandagatla@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>