tools/power turbostat: add single character tokens to help

Improve the help() output by adding the single character
tokens (e.g -a).

Signed-off-by: Nathan Ciobanu <nathan.d.ciobanu@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

tools/power/x86/turbostat/turbostat.c

@@ -524,17 +524,20 @@ void help(void)
 	"when COMMAND completes.\n"
 	"If no COMMAND is specified, turbostat wakes every 5-seconds\n"
 	"to print statistics, until interrupted.\n"
-	"--add		add a counter\n"
-	"		eg. --add msr0x10,u64,cpu,delta,MY_TSC\n"
-	"--cpu	cpu-set	limit output to summary plus cpu-set:\n"
-	"		{core | package | j,k,l..m,n-p }\n"
-	"--interval sec.subsec	Override default 5-second measurement interval\n"
-	"--list		list column headers only\n"
-	"--num_iterations num   number of the measurement iterations\n"
-	"--out file	create or truncate \"file\" for all output\n"
-	"--quiet	skip decoding system configuration header\n"
-	"--help		print this help message\n"
-	"--version	print version information\n"
+	"  -a, --add	add a counter\n"
+	"		  eg. --add msr0x10,u64,cpu,delta,MY_TSC\n"
+	"  -c, --cpu	cpu-set	limit output to summary plus cpu-set:\n"
+	"		  {core | package | j,k,l..m,n-p }\n"
+	"  -i, --interval sec.subsec\n"
+	"		Override default 5-second measurement interval\n"
+	"  -l, --list	list column headers only\n"
+	"  -n, --num_iterations num\n"
+	"		number of the measurement iterations\n"
+	"  -o, --out file\n"
+	"		create or truncate \"file\" for all output\n"
+	"  -q, --quiet	skip decoding system configuration header\n"
+	"  -h, --help	print this help message\n"
+	"  -v, --version	print version information\n"
 	"\n"
 	"For more help, run \"man turbostat\"\n");
 }