[v2, 1/2] mmc: fsl_esdhc: read register once for card inserted status

[Peng Fan]

> Subject: [v2, 1/2] mmc: fsl_esdhc: read register once for card inserted status
> 
> No need to poll register for card inserted status.
> 
> Signed-off-by: Yangbo Lu <yangbo.lu at nxp.com>

Acked-by: Peng Fan <peng.fan at nxp.com>