patch files are now arranged in lexical order to ensure a consistent md5sum

Change-Id: I4b54b47446cf42686099dccaea86672efa806d29

vendorsetup.sh

@@ -44,7 +44,7 @@ B2G_PATCH_DIRS=${B2G_PATCH_DIRS_OVERRIDE:-device/qcom/b2g_common/patch}
 __tree_md5sum()
 {
    (
-      FILELIST="$(find $@ -type f ! -path "*/.*" 2>/dev/null || true) ${B2G_HASHED_FILES}"
+      FILELIST="$(find $@ -type f ! -path "*/.*" 2>/dev/null | sort) ${B2G_HASHED_FILES}"
       if [[ -n "${B2G_USE_REPO}" ]]; then
          ${REPO} manifest -r -o - 2>/dev/null
       fi