[SPARC64]: kzalloc() conversion

this patch converts arch/sparc64 to kzalloc usage.
Crosscompile tested with allyesconfig.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/us3_cpufreq.c b/arch/sparc64/kernel/us3_cpufreq.c
index a912c45..47e3aca 100644
--- a/arch/sparc64/kernel/us3_cpufreq.c
+++ b/arch/sparc64/kernel/us3_cpufreq.c
@@ -218,20 +218,16 @@
 		struct cpufreq_driver *driver;
 
 		ret = -ENOMEM;
-		driver = kmalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
+		driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
 		if (!driver)
 			goto err_out;
-		memset(driver, 0, sizeof(*driver));
 
-		us3_freq_table = kmalloc(
+		us3_freq_table = kzalloc(
 			(NR_CPUS * sizeof(struct us3_freq_percpu_info)),
 			GFP_KERNEL);
 		if (!us3_freq_table)
 			goto err_out;
 
-		memset(us3_freq_table, 0,
-		       (NR_CPUS * sizeof(struct us3_freq_percpu_info)));
-
 		driver->init = us3_freq_cpu_init;
 		driver->verify = us3_freq_verify;
 		driver->target = us3_freq_target;