ARM: mxc: fix Kconfig typo 'i.MX51'

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/arch/arm/plat-mxc/Kconfig b/arch/arm/plat-mxc/Kconfig
index a5353fc..4c8fdbc 100644
--- a/arch/arm/plat-mxc/Kconfig
+++ b/arch/arm/plat-mxc/Kconfig
@@ -39,7 +39,7 @@
 	select ARCH_MX50_SUPPORTED
 	select ARCH_MX53_SUPPORTED
 	help
-	  This enables support for machines using Freescale's i.MX50 and i.MX51
+	  This enables support for machines using Freescale's i.MX50 and i.MX53
 	  processors.
 
 config ARCH_MX51