Add style file for index.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11345 a1c6a512-1295-4272-9138-f99709370657
diff --git a/manual/mkidx.ist b/manual/mkidx.ist
new file mode 100644
index 0000000..b8d7571
--- /dev/null
+++ b/manual/mkidx.ist
@@ -0,0 +1,4 @@
+headings_flag 1
+heading_prefix "{\\bf "
+heading_suffix "}\\nopagebreak%\n \\vskip.2\\baselineskip\\nopagebreak%"
+