clk: ux500: Provide a look-up for the ARMSS clock

The ARMSS clock is used by the newly DT enabled CPUFreq driver.

Cc: Mike Turquette <mturquette@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

drivers/clk/ux500/u8500_of_clk.c

@@ -233,6 +233,7 @@ void u8500_of_clk_init(u32 clkrst1_base, u32 clkrst2_base, u32 clkrst3_base,
 
 	clk = clk_reg_prcmu_scalable_rate("armss", NULL,
 				PRCMU_ARMSS, 0, CLK_IS_ROOT|CLK_IGNORE_UNUSED);
+	prcmu_clk[PRCMU_ARMSS] = clk;
 
 	twd_clk = clk_register_fixed_factor(NULL, "smp_twd", "armss",
 				CLK_IGNORE_UNUSED, 1, 2);