mmc: core: Add card detection IRQ restore

Card detection can be done on TLMM or PMIC GPIOs.
In the latter case, the IRQ should be explicitly restored
in order for the detection to be successful after restoring
from hibernation and also cleared in freeze path.

Change-Id: I828b736fc5cb46e132ea849b8965f8c4a3b2feac
Signed-off-by: Anjana Hari <ahari@codeaurora.org>