pinctrl: Add wakeup GPIO register and bit information for khaje

Enable and populate wake_reg and wake_bit fields for the pin
groups for Khaje. This is needed to configure GPIOs as wake
up capable.

Change-Id: Ie5c4ffdb312a93cfd941e614bedbb141c73e963f
Signed-off-by: Komal Bajaj <kbajaj@codeaurora.org>