mmc: SDHCI: fix the issue related with SD card insert/remove

mmc: SDHCI: fix the issue related with SD card insert/remove

BZ 1605

insert/remove a SD card quickly while the card is inusing, can cause
MMC driver print timeout error message. This is reasonable. But should
not cause system getting slow. This patch will fix this.

Change-Id: Iffb1fe615603f2cd5ab74d28120d38167d317cb7
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Reviewed-on: http://android.intel.com:8080/23125
Reviewed-by: Gross, Mark <mark.gross@intel.com>
Tested-by: Gross, Mark <mark.gross@intel.com>