drivers: pinctrl: sdxlemur: add GPIO PDC map

Add GPIO pins that are routed to PDC interrupt controller and can be
used as wakeup capable GPIOs.

Change-Id: If2044dfe89f7593ee3a6fd843866d4f86f3f42a6
Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Signed-off-by: Tushar Nimkar <tnimkar@codeaurora.org>