tty: serial: s/Medfile/Medfield

Fixed misspelling of 'Medfield'
Signed-off-by: NJoseph Kogut <joseph.kogut@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/Kconfig

@@ -489,7 +489,7 @@ config SERIAL_MFD_HSU
 	select SERIAL_CORE
 
 config SERIAL_MFD_HSU_CONSOLE
-	bool "Medfile HSU serial console support"
+	bool "Medfield HSU serial console support"
 	depends on SERIAL_MFD_HSU=y
 	select SERIAL_CORE_CONSOLE