common: factor out common opts to all scripts

gem5-stat

@@ -1,11 +1,8 @@
 #!/usr/bin/env bash
 . "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/common"
 common_gem5=true
-while getopts a:hs: OPT; do
+while getopts "h${common_getopts_flags}" OPT; do
   case "$OPT" in
-    a)
-      common_arch="$OPTARG"
-      ;;
     h)
       printf "\
 usage: $0 [-a arch] [stat=system.cpu.numCycles]
@@ -13,6 +10,9 @@ Get the value for a gem5 stat from the stats.txt file.
 " 1>&2
       exit
       ;;
+    ?)
+      common_getopts_case "$OPT"
+      ;;
   esac
 done
 shift "$(($OPTIND - 1))"