MIPS: ralink: Add missing clock on rt305x

The rt305x support is missing a clock required by the ethernet driver.

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11447/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/ralink/rt305x.c b/arch/mips/ralink/rt305x.c
index 7e11f00..9e45725 100644
--- a/arch/mips/ralink/rt305x.c
+++ b/arch/mips/ralink/rt305x.c
@@ -199,6 +199,7 @@
 	}
 
 	ralink_clk_add("cpu", cpu_rate);
+	ralink_clk_add("sys", sys_rate);
 	ralink_clk_add("10000b00.spi", sys_rate);
 	ralink_clk_add("10000100.timer", wdt_rate);
 	ralink_clk_add("10000120.watchdog", wdt_rate);