ARM: dts: msm: Set card detect gpio pull down for 8939 SKUK

card detect gpio is multiplex between SD and QDSD blocks.
according to hw, card detect gpio is floating. set it to pull
down with suspend and resume to avoid trigger unnecessary
QDSD search process.

Change-Id: I7ec40544792541f7757f75427726e6f0e51b67f2
Signed-off-by: Guoping Yu <guopingy@codeaurora.org>