dt-bindings: interconnect: Add Qualcomm MSM8996 DT bindings

Add bindings for interconnects on Qualcomm MSM8996.

Signed-off-by: Yassine Oudjana <y.oudjana@protonmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> #db820c
Link: https://lore.kernel.org/r/20211021132329.234942-4-y.oudjana@protonmail.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>