clk: mvebu: Fix valid value range checking for cpu_freq_select

cpu_freq_select is used as array subscript, thus the valid value range
is 0 ... ARRAY_SIZE() - 1.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: fixed up trivial merge issues]

drivers/clk/mvebu/clk-core.c

@@ -156,7 +156,7 @@ static u32 __init armada_370_get_cpu_freq(void __iomem *sar)
 
 	cpu_freq_select = ((readl(sar) >> SARL_A370_PCLK_FREQ_OPT) &
 			   SARL_A370_PCLK_FREQ_OPT_MASK);
-	if (cpu_freq_select > ARRAY_SIZE(armada_370_cpu_frequencies)) {
+	if (cpu_freq_select >= ARRAY_SIZE(armada_370_cpu_frequencies)) {
 		pr_err("CPU freq select unsuported %d\n", cpu_freq_select);
 		cpu_freq = 0;
 	} else
@@ -278,7 +278,7 @@ static u32 __init armada_xp_get_cpu_freq(void __iomem *sar)
 	cpu_freq_select |= (((readl(sar+4) >> SARH_AXP_PCLK_FREQ_OPT) &
 			     SARH_AXP_PCLK_FREQ_OPT_MASK)
 			    << SARH_AXP_PCLK_FREQ_OPT_SHIFT);
-	if (cpu_freq_select > ARRAY_SIZE(armada_xp_cpu_frequencies)) {
+	if (cpu_freq_select >= ARRAY_SIZE(armada_xp_cpu_frequencies)) {
 		pr_err("CPU freq select unsuported: %d\n", cpu_freq_select);
 		cpu_freq = 0;
 	} else