ARM: S3C64XX: Provide logging when CPU frequencies are eliminated due to clocks

This provides symmetry with the voltage based checks done for the
regulator.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

arch/arm/plat-s3c64xx/cpufreq.c

@@ -217,8 +217,11 @@ static int __init s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
 		/* Check for frequencies we can generate */
 		r = clk_round_rate(armclk, freq->frequency * 1000);
 		r /= 1000;
-		if (r != freq->frequency)
+		if (r != freq->frequency) {
+			pr_debug("cpufreq: %dkHz unsupported by clock\n",
+				 freq->frequency);
 			freq->frequency = CPUFREQ_ENTRY_INVALID;
+		}
 
 		/* If we have no regulator then assume startup
 		 * frequency is the maximum we can support. */