serial: mxs-auart+imx: allow compile testing on non-Freescale architectures

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 835ef4d..0667d1a 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -571,7 +571,7 @@
 
 config SERIAL_IMX
 	tristate "IMX serial port support"
-	depends on ARCH_MXC
+	depends on ARCH_MXC || COMPILE_TEST
 	select SERIAL_CORE
 	select RATIONAL
 	help
@@ -1409,7 +1409,7 @@
 	  warnings and which allows logins in single user mode).
 
 config SERIAL_MXS_AUART
-	depends on ARCH_MXS
+	depends on ARCH_MXS || COMPILE_TEST
 	tristate "MXS AUART support"
 	select SERIAL_CORE
 	select SERIAL_MCTRL_GPIO if GPIOLIB