perf trace x86_arch_prctl: Address shellcheck warnings about local va…

…riables

Running shellcheck on x86_arch_prctl.sh generates below warning:

  In ./tools/perf/trace/beauty/x86_arch_prctl.sh line 10:
      	local idx=$1
        ^-------^ SC3043 (warning): In POSIX sh, 'local' is undefined.

  In ./tools/perf/trace/beauty/x86_arch_prctl.sh line 11:
	local prefix=$2
        ^----------^ SC3043 (warning): In POSIX sh, 'local' is undefined.

   In ./tools/perf/trace/beauty/x86_arch_prctl.sh line 12:
	local first_entry=$3
        ^---------------^ SC3043 (warning): In POSIX sh, 'local' is undefined.

Fix this by removing local since these are variables used only in
specific function

Signed-off-by: Athira Rajeev <[email protected]>
Acked-by: Ian Rogers <[email protected]>
Cc: Disha Goel <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kajol Jain <[email protected]>
Cc: Madhavan Srinivasan <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

tools/perf/trace/beauty/x86_arch_prctl.sh

@@ -7,9 +7,9 @@
 prctl_arch_header=${x86_header_dir}/prctl.h
 
 print_range () {
-	local idx=$1
-	local prefix=$2
-	local first_entry=$3
+	idx=$1
+	prefix=$2
+	first_entry=$3
 
 	printf "#define x86_arch_prctl_codes_%d_offset %s\n" $idx $first_entry
 	printf "static const char *x86_arch_prctl_codes_%d[] = {\n" $idx