interconnect: qcom: add a driver for sa8775p

Introduce QTI SA8775P-specific interconnect driver.

Signed-off-by: Shazad Hussain <quic_shazhuss@quicinc.com>
[Bartosz: made the driver ready for upstream]
Co-developed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230118140825.242544-1-brgl@bgdev.pl
Signed-off-by: Georgi Djakov <djakov@kernel.org>