Adding Delta AG7648 to hardware list.

Change-Id: Ic4c0044f66ba9256cd8f000402bedb1ed0acf969
diff --git a/prereqs/hardware.md b/prereqs/hardware.md
index 06e6ab0..a790698 100644
--- a/prereqs/hardware.md
+++ b/prereqs/hardware.md
@@ -55,6 +55,7 @@
         * OCP Accepted™ EdgeCore AS5712-54X
         * OCP Accepted™ EdgeCore AS5812-54X
         * QuantaMesh T3048-LY8
+        * Delta AG7648
     * **25G** models (with 100G uplinks)
         * QuantaMesh BMS T7032-IX1/IX1B (with 25G breakout cable)
     * **40G** models