serial: imx: Improve Kconfig text

Some improvements in the Kconfig text:

- Vendor is Freescale now
- Provide a better example for the console parameter, which is something like
console=ttymxc0
- Do not pass the names of ancient bootloaders
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/Kconfig

@@ -564,15 +564,14 @@ config SERIAL_IMX_CONSOLE
 	depends on SERIAL_IMX=y
 	select SERIAL_CORE_CONSOLE
 	help
-	  If you have enabled the serial port on the Motorola IMX
+	  If you have enabled the serial port on the Freescale IMX
 	  CPU you can make it the console by answering Y to this option.
 
 	  Even if you say Y here, the currently visible virtual console
 	  (/dev/tty0) will still be used as the system console by default, but
 	  you can alter that using a kernel command line option such as
-	  "console=ttySA0". (Try "man bootparam" or see the documentation of
-	  your boot loader (lilo or loadlin) about how to pass options to the
-	  kernel at boot time.)
+	  "console=ttymxc0". (Try "man bootparam" or see the documentation of
+	  your bootloader about how to pass options to the kernel at boot time.)
 
 config SERIAL_UARTLITE
 	tristate "Xilinx uartlite serial port support"