meta-ampere: mtjade: buttons: enable warm-reboot option

Enable reset-button-do-warm-reboot to configure the reset button to
trigger SYSRESET GPIO when released.

Tested:
 1. Turn ON the Host.
 2. Press and release the reset button. Check if the Host is reset while
    Host power is still ON

Signed-off-by: Thang Q. Nguyen <thang@os.amperecomputing.com>
Change-Id: Ife26183fa39f6dcbbb4b6e0aec30163ced257a35
diff --git a/meta-ampere/meta-jade/recipes-phosphor/chassis/obmc-phosphor-buttons_%.bbappend b/meta-ampere/meta-jade/recipes-phosphor/chassis/obmc-phosphor-buttons_%.bbappend
new file mode 100644
index 0000000..7474dfb
--- /dev/null
+++ b/meta-ampere/meta-jade/recipes-phosphor/chassis/obmc-phosphor-buttons_%.bbappend
@@ -0,0 +1,3 @@
+EXTRA_OEMESON:append = " \
+                         -Dreset-button-do-warm-reboot=enabled \
+                       "