pinctrl: Add support for msm8953 pinctrl

This implementation is based on a snapshot of the msm8953
pinctrl driver as of 'commit 5db02769ab19a
("qseecom: use strnlen in qseecom_start_app")'.
Also add new document of msm8953 pingctrl bindings according
to latest pinctrl driver style.

Change-Id: I813922fff7fcd5f2757596206c0d2f4e7e7c123f
Signed-off-by: Srinivas Ramana <sramana@codeaurora.org>
4 files changed