MIPS: ath79: register UART for the QCA955X SoCs

Similarly to the preceding SoCs, the QCA955X SoCs
also have a built-in NS16650 compatible UART.
Register the platform device for that to make
it usable.

Cc: Rodriguez, Luis <rodrigue@qca.qualcomm.com>
Cc: Giori, Kathy <kgiori@qca.qualcomm.com>
Cc: QCA Linux Team <qca-linux-team@qca.qualcomm.com>
Signed-off-by: NGabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4949/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

arch/mips/ath79/dev-common.c

@@ -90,7 +90,8 @@ void __init ath79_register_uart(void)
 	if (soc_is_ar71xx() ||
 	    soc_is_ar724x() ||
 	    soc_is_ar913x() ||
-	    soc_is_ar934x()) {
+	    soc_is_ar934x() ||
+	    soc_is_qca955x()) {
 		ath79_uart_data[0].uartclk = clk_get_rate(clk);
 		platform_device_register(&ath79_uart_device);
 	} else if (soc_is_ar933x()) {