SD card detect GPIO line can be ACTIVE HIGH or ACTIVE LOW based on the way the board is designed. This change will allow the polarity information to be used when determining if a card was inserted or removed for a given board. CRs-fixed: 318036 Change-Id: I30b96e840a28030af3141fd722383722a24089c8 Signed-off-by: Krishna Konda <kkonda@codeaurora.org>