perf tests arm_callgraph_fp: Address shellcheck warnings about signal names and adding double quotes for expression

Running shellcheck -S on test_arm_calligraph_fp throws warnings SC2086 and SC3049,

      $shellcheck -S warning tests/shell/test_arm_callgraph_fp.sh
         rm -f $PERF_DATA
            : Double quote to prevent globbing and word splitting.
         trap cleanup_files exit term int
                     : In POSIX sh, using lower/mixed case for signal names is undefined.

After fixing the warnings,

      $shellcheck tests/shell/test_arm_callgraph_fp.sh
      $ echo $?
      0

To address the POSIX shell warnings added changes to convert Lowercase
signal names to uppercase in the script and double quoted the
command substitutions($fix to "$fix") to solve Globbing warnings.

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

0 files changed, 0 insertions, 0 deletions