cpufreq: sparc: change kzalloc to kcalloc

Refactor to use kcalloc instead of kzalloc when multiplying
allocation size by count. This refactor prevents unintentional
memory overflows. Discovered by checkpatch.pl.

Signed-off-by: Ethan Carter Edwards <[e-mail]>
Signed-off-by: Viresh Kumar <[e-mail]>

drivers/cpufreq/sparc-us2e-cpufreq.c

···
 	impl  = ((ver >> 32) & 0xffff);
 
 	if (manuf == 0x17 && impl == 0x13) {
-		us2e_freq_table = kzalloc(NR_CPUS * sizeof(*us2e_freq_table),
+		us2e_freq_table = kcalloc(NR_CPUS, sizeof(*us2e_freq_table),
 					  GFP_KERNEL);
 		if (!us2e_freq_table)
 			return -ENOMEM;

drivers/cpufreq/sparc-us3-cpufreq.c

···
 	     impl == CHEETAH_PLUS_IMPL ||
 	     impl == JAGUAR_IMPL ||
 	     impl == PANTHER_IMPL)) {
-		us3_freq_table = kzalloc(NR_CPUS * sizeof(*us3_freq_table),
+		us3_freq_table = kcalloc(NR_CPUS, sizeof(*us3_freq_table),
 					 GFP_KERNEL);
 		if (!us3_freq_table)
 			return -ENOMEM;