staging: mt7621:mmc: Remove unused field reserved from msdc_host

The reserved field of msdc_host is never used and msdc_host is also
never exposed to hardware, so remove that field.
Signed-off-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-mmc/mt6575_sd.h

@@ -955,7 +955,6 @@ struct msdc_host {
 	u8                          power_mode;     /* host power mode */
 	u8                          card_inserted;  /* card inserted ? */
 	u8                          suspend;        /* host suspended ? */
-	u8                          reserved;
 	u8                          app_cmd;        /* for app command */
 	u32                         app_cmd_arg;
 };