mmc: sdhci-esdhc-imx: sd dat1 glitch causes system panic

some sd cards insertion will cause a glitch on sd dat1
which is also a card interrupt signal. Thus the wrongly
generated card interrupt will make system panic because
there's no registered sdio interrupt handler.
the patch fixes this issue.

Signed-off-by: Tony Lin <tony.lin@freescale.com>
Signed-off-by: RichardZhu <richard.zhu@linaro.org>
1 file changed