docs-rst: convert s390-drivers DocBook to ReST

Use pandoc to convert documentation to ReST by calling
Documentation/sphinx/tmplcvt script.

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/Documentation/driver-api/index.rst b/Documentation/driver-api/index.rst
index c3c50b1..a968773 100644
--- a/Documentation/driver-api/index.rst
+++ b/Documentation/driver-api/index.rst
@@ -34,6 +34,7 @@
    edac
    libata
    miscellaneous
+   s390-drivers
    vme
    80211/index
    uio-howto