serial: 8250: Make SERIAL_8250_EM available for arm64 systems

This is needed for the Renesas RZ/V2M (r9a09g011) SoC.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220330154024.112270-6-phil.edworthy@renesas.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/8250/Kconfig

@@ -380,7 +380,7 @@ config SERIAL_8250_DW
 config SERIAL_8250_EM
 	tristate "Support for Emma Mobile integrated serial port"
 	depends on SERIAL_8250 && HAVE_CLK
-	depends on (ARM && ARCH_RENESAS) || COMPILE_TEST
+	depends on ARCH_RENESAS || COMPILE_TEST
 	help
 	  Selecting this option will add support for the integrated serial
 	  port hardware found on the Emma Mobile line of processors.