meta-facebook: power-control: Enable system reset

Enable system power reset in x86-power-control with setting
CHASSIS_SYSTEM_RESET compile flag.

Tested: Verified this by checking the system reset interface
    /xyz/openbmc_project/state/chassis_system0 created in dbus node

Change-Id: I17f07743f94f13ccf0b87b1a21cec4c0560adde1
Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
diff --git a/recipes-x86/chassis/x86-power-control_%.bbappend b/recipes-x86/chassis/x86-power-control_%.bbappend
index 72d991c..aa99b7e 100644
--- a/recipes-x86/chassis/x86-power-control_%.bbappend
+++ b/recipes-x86/chassis/x86-power-control_%.bbappend
@@ -1 +1,2 @@
 FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+EXTRA_OECMAKE += "-DCHASSIS_SYSTEM_RESET=ON"