MIPS: ralink: add rt3883 wmac clock

Register the wireless mac clock on rti3883. This is required by the wifi driver.
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/8007/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/ralink/rt3883.c

@@ -204,6 +204,7 @@ void __init ralink_clk_init(void)
 	ralink_clk_add("10000b00.spi", sys_rate);
 	ralink_clk_add("10000c00.uartlite", 40000000);
 	ralink_clk_add("10100000.ethernet", sys_rate);
+	ralink_clk_add("10180000.wmac", 40000000);
 }
 
 void __init ralink_of_remap(void)