mmc: msm_sdcc: Add support for card detect, write protect gpios

Add support for SD card insertion/removal detection and
write protect switch detection using gpio numbers passed
through device tree.

Change-Id: I63aed72f38f912b33de4b8eaedf72e52bbaeb4a0
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
3 files changed