drivers: msm: pinctrl: Add custom TLMM direct connect list feature support

Add support for enabling a feature where a user can provide a
custom list of TLMM GPIOs associated with hardware IRQs for direct
connect interrupt support. This feature is needed because the
TLMM GPIO direct connect interrupt list is fixed per target which
is restrictive for a usecase where a custom list of direct connect
interrupts for GPIOs is needed.

Change-Id: I9b4eb8005a7c0230940a59337352bb3eaaa51ceb
Signed-off-by: Anant Goel <anantg@codeaurora.org>