ARM: dts: msm: Add sd card support on sdxpoorwills stacked platform

SD card related GPIOs are different between stacked and non-stacked
platforms of sdxpoorwills. Updating these GPIOs for the stacked-
platform.

Without this change, SD card won't work on this platform.

Change-Id: If81a4a1b29629a0cea29c955de96a9ef24f96624
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>