ARM: dts: SiRF: add lost usp1_uart_nostreamctrl pin group for atlas6

this patch adds lost usp1_uart_nostreamctrl pin group for atlas6, which
matches with the change in drivers/pinctrl/sirf/pinctrl-atlas6.c.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>

arch/arm/boot/dts/atlas6.dtsi

@@ -556,6 +556,12 @@ usp1 {
                                                 sirf,function = "usp1";
                                         };
                                 };
+				usp1_uart_nostreamctrl_pins_a: usp1@1 {
+                                        usp1 {
+                                                sirf,pins = "usp1_uart_nostreamctrl_grp";
+                                                sirf,function = "usp1_uart_nostreamctrl";
+                                        };
+                                };
                                 usb0_upli_drvbus_pins_a: usb0_upli_drvbus@0 {
                                         usb0_upli_drvbus {
                                                 sirf,pins = "usb0_upli_drvbusgrp";