mmc: msm_sdcc: Fix a typo in MSM SDCC driver gpio setup

The use of && instead of || caused a NULL pointer dereference if
gpio setup was not passed via platform data

Signed-off-by: Alexander Tarasikov <alexander.tarasikov@gmail.com>
Acked-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>