cpupower: remove extern declarations in cmd functions

extern char *optarg and extern int optind, opterr, optopt are
already declared by <getopt.h>, which is included at the top of
the file. Repeating extern declarations inside a function body
is misleading and unnecessary.

Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

Author: kaushlen

tools/power/cpupower/utils/cpufreq-info.c

@@ -542,8 +542,6 @@ static struct option info_opts[] = {
 
 int cmd_freq_info(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	int ret = 0, cont = 1;
 	unsigned int cpu = 0;
 	unsigned int human = 0;

tools/power/cpupower/utils/cpufreq-set.c

@@ -195,8 +195,6 @@ static int do_one_cpu(unsigned int cpu, struct cpufreq_policy *new_pol,
 
 int cmd_freq_set(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	int ret = 0, cont = 1;
 	int double_parm = 0, related = 0, policychange = 0;
 	unsigned long freq = 0;

tools/power/cpupower/utils/cpuidle-info.c

@@ -139,8 +139,6 @@ static inline void cpuidle_exit(int fail)
 
 int cmd_idle_info(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	int ret = 0, cont = 1, output_param = 0, verbose = 1;
 	unsigned int cpu = 0;
 

tools/power/cpupower/utils/cpuidle-set.c

@@ -24,8 +24,6 @@ static struct option info_opts[] = {
 
 int cmd_idle_set(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	int ret = 0, cont = 1, param = 0, disabled;
 	unsigned long long latency = 0, state_latency;
 	unsigned int cpu = 0, idlestate = 0, idlestates = 0;

tools/power/cpupower/utils/cpupower-info.c

@@ -28,8 +28,6 @@ static void print_wrong_arg_exit(void)
 
 int cmd_info(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	unsigned int cpu;
 	struct utsname uts;
 

tools/power/cpupower/utils/cpupower-set.c

@@ -33,8 +33,6 @@ static void print_wrong_arg_exit(void)
 
 int cmd_set(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	unsigned int cpu;
 	struct utsname uts;