[ARM] 3120/1: Fix MMC/SD card driver resume deadlock

Patch from Uli Luckas

This is a simplification of patch 3116/1 as sugested by Russell King.
Signed-off-by: NUli Luckas <u.luckas@road-gmbh.de>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

drivers/mmc/mmc.c

@@ -1263,7 +1263,7 @@ EXPORT_SYMBOL(mmc_suspend_host);
  */
 int mmc_resume_host(struct mmc_host *host)
 {
-	mmc_detect_change(host, 0);
+	mmc_rescan(host);
 
 	return 0;
 }