mmc: msm_sdcc: Prevent NULL pointer dereference in IRQ

Ensure card object is accessed only when it is not NULL. Use
AND in place of OR operator, and correctly check for presence
of SDIO card.

Change-Id: Ibd95b4b213da3db5bdf83e3ca5664e88291e6e36
Signed-off-by: Oluwafemi Adeyemi <aadeyemi@codeaurora.org>
(cherry picked from commit 3975e5d64c6daec3d73864bf861061f45b9a14d5)

Signed-off-by: Sridhar Gujje <sgujje@codeaurora.org>
build: Fix target smd_rpc_sym.c

This change adds smd_rpc_sym.c to the git ignore and clean list.