[MMC] Remove extra character in AU1XXX MMC Kconfig entry

An obvious vi fat finger on my part.
Signed-off-by: NJordan Crouse <jordan.crouse@amd.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

drivers/mmc/Kconfig

@@ -65,7 +65,7 @@ config MMC_AU1X
 	depends on SOC_AU1X00 && MMC
 	help
 	  This selects the AMD Alchemy(R) Multimedia card interface.
-	  iIf you have a Alchemy platform with a MMC slot, say Y or M here.
+	  If you have a Alchemy platform with a MMC slot, say Y or M here.
 
 	  If unsure, say N.