pinctrl: qcom: Add sdm855 pinctrl driver

Add initial sdm855 driver to support pin configuration with
pinctrl framework for sdm855 SoC.

Change-Id: I429b32ba9a4336c2f43e9b264e0179dcc8c43816
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>