pinctrl: qcom: Add PDC mux information to sdxpoorwills pinctrl

Add PDC mux mapping and mux to GIC interrupt in sdxpoorwills pinctrl
configuration file.

Change-Id: I1c49a12e30f4d08d114d53c31c38ece916bfe4a0
Signed-off-by: Archana Sathyakumar <asathyak@codeaurora.org>
Signed-off-by: Lina Iyer <ilina@codeaurora.org>