Revert "Revert "poky: subtree update:b23aa6b753..ad30a6d470""

This reverts commit 4873add6e11c1bd421c83cd08df589f1184aa673.

A fix has been put up for openbmc/openbmc#3720 so we can bring
this back now

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: If59020a5b502f70aa7149fbef4ad2f50824d1ce6
diff --git a/poky/meta/recipes-core/systemd/systemd_246.6.bb b/poky/meta/recipes-core/systemd/systemd_246.6.bb
index c1424a1..9215adf 100644
--- a/poky/meta/recipes-core/systemd/systemd_246.6.bb
+++ b/poky/meta/recipes-core/systemd/systemd_246.6.bb
@@ -20,6 +20,7 @@
            file://99-default.preset \
            file://0001-binfmt-Don-t-install-dependency-links-at-install-tim.patch \
            file://0003-implment-systemd-sysv-install-for-OE.patch \
+           file://0001-systemd.pc.in-use-ROOTPREFIX-without-suffixed-slash.patch \
            "
 
 # patches needed by musl