Add option to provide which swupd binaries to use

For testing or custom configurations it may be desirable to use swupd
binaries that are not the system installed ones.

Signed-off-by: Tudor Marcu <tudor.marcu@intel.com>

create-update.sh

@@ -3,7 +3,7 @@ set -e
 
 CLRVER=$(cat "$PWD/.clear-version")
 MIXVER=$(cat "$PWD/.mix-version")
-
+PREFIX=
 
 while [[ $# > 0 ]]
 do
@@ -17,6 +17,10 @@ do
     FORMAT="$2"
     shift
     ;;
+    -p|--prefix)
+    PREFIX="$2"
+    shift
+    ;;
     -h|--help)
     echo -e "Usage: mixer-create-update.sh\n"
     echo -e "\t-c, --config Supply specific builder.conf\n"
@@ -50,14 +54,14 @@ if [ ! -d "$STATE_DIR/www/version/format$FORMAT" ]; then
 fi
 
 # step 1: create update content for current mix
-sudo -E "swupd_create_update" -S "$STATE_DIR" --osversion $MIXVER
+sudo -E "$PREFIX"swupd_create_update -S "$STATE_DIR" --osversion $MIXVER
 
 # step 2: create fullfiles
-sudo -E "swupd_make_fullfiles" -S "$STATE_DIR" $MIXVER
+sudo -E "$PREFIX"swupd_make_fullfiles -S "$STATE_DIR" $MIXVER
 
 # step 3: create zero/delta packs
 for bundle in $(ls "$BUNDLEREPO"); do
-	sudo -E "swupd_make_pack" -S "$STATE_DIR" 0 $MIXVER $bundle
+	sudo -E "$PREFIX"swupd_make_pack -S "$STATE_DIR" 0 $MIXVER $bundle
 done
 
 # step 4: hardlink relevant dirs