PHAL: Add service dependency to DEVTREE creation

Start the services that require DEVTREE after the
openpower-update-bios-attr-table.service since that's the one that
sets up the DEVTREE symlink. Also update the path to DEVTREE to the one
defined by the meson options.

Tested: Verified phal started after the bios attr service file, powered
on, and issued reboot at power on without any errors. Verified service
files had devtree path of:
Environment="PDBG_DTB=/media/hostfw/running/DEVTREE"

Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
Change-Id: If41f86b287b70c48d17c6f4b2af9aa0adfb81488
diff --git a/service_files/op-reset-host-check@.service.in b/service_files/op-reset-host-check@.service.in
index 50d1e90..abada7c 100644
--- a/service_files/op-reset-host-check@.service.in
+++ b/service_files/op-reset-host-check@.service.in
@@ -8,6 +8,7 @@
 Before=obmc-host-reset-running@%i.target
 Wants=op-reset-chassis-on@%i.service
 After=op-reset-chassis-on@%i.service
+After=openpower-update-bios-attr-table.service
 Conflicts=obmc-host-stop@%i.target
 ConditionPathExists=/run/openbmc/chassis@%i-on
 ConditionPathExists=!/run/openbmc/host@%i-on