Reset poky to before our libpam hacks

Things got a bit out of synch with openbmc-config due to the libpam
issues and the migration from the meta-* layers.

Revert the two previous commits and then put the latest poky in with the
libpam revert and get openbmc-config right again.

Revert "Revert "libpam: update 1.3.1 -> 1.5.1""

This reverts commit 87ddd3eab4df68e624b5350ccaab28b3b97547c0.

Revert "poky: subtree update:796be0593a..10c69538c0"

This reverts commit c723b72979bfac6362509cf1fe086900f6641f28.

Change-Id: I3a1f405193aee6a21fe0cd24be9927c143a23d9a
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/poky/meta/recipes-devtools/libmodulemd/libmodulemd_git.bb b/poky/meta/recipes-devtools/libmodulemd/libmodulemd_git.bb
index b9a64f0..10204ac 100644
--- a/poky/meta/recipes-devtools/libmodulemd/libmodulemd_git.bb
+++ b/poky/meta/recipes-devtools/libmodulemd/libmodulemd_git.bb
@@ -6,8 +6,8 @@
            file://0001-modulemd-generate-the-manpage-only-if-the-feature-is.patch \
            "
 
-PV = "2.11.1"
-SRCREV = "0ead09d0a35b9095e1a01afd540abd7217b31fba"
+PV = "2.9.4"
+SRCREV = "c7254db07b21495fc9bd247c5b17ee20149c05e3"
 
 S = "${WORKDIR}/git"