ARM: dts: aspeed: cmm: enable ehci host controllers

Enable ehci0 and ehci1 USB host controllers on Facebook Backpack CMM BMC.
Signed-off-by: Tao Ren <taoren@fb.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-facebook-cmm.dts

@@ -372,3 +372,11 @@ &i2c13 {
 &adc {
 	status = "okay";
 };
+
+&ehci0 {
+	status = "okay";
+};
+
+&ehci1 {
+	status = "okay";
+};