Update hiddenapi preupload checks to handle new location

The config/hiddenapi-*.txt files have moved so this change updates the
preupload scripts to match their new location.

Test: Modify the boot/hiddenapi/hiddenapi-*.txt files in various ways
      to verify the scripts fail.
Change-Id: I725458e809d9871b2c21bc4e18f62441aaa775a9
diff --git a/tools/hiddenapi/exclude.sh b/tools/hiddenapi/exclude.sh
index 2924e01..822aba4 100755
--- a/tools/hiddenapi/exclude.sh
+++ b/tools/hiddenapi/exclude.sh
@@ -48,7 +48,7 @@
 PACKAGES=$(for t in $TEAMS; do echo $(eval echo \${${t}_PACKAGES}); done)
 RE=$(echo ${PACKAGES} | sed "s/ /|/g")
 EXIT_CODE=0
-for file in $(git show --name-only --pretty=format: $SHA | grep "config/hiddenapi-.*txt"); do
+for file in $(git show --name-only --pretty=format: $SHA | grep "boot/hiddenapi/hiddenapi-.*txt"); do
     ENTRIES=$(grep -E "^\+L(${RE})/" <(git diff ${SHA}~1 ${SHA} $file) | sed "s|^\+||" || echo)
     if [[ -n "${ENTRIES}" ]]; then
       echo -e "\e[1m\e[31m$file $SHA contains the following entries\e[0m"