powerpc: dts: p2020: Add gpio-controller@fc00 node via pq3-gpio-0.dtsi

Import pq3-gpio-0.dtsi device tree include file from upstream Linux kernel
for P2020. This allows U-Boot to use P2020 device tree files from upstream
Linux kernel which reference gpio-controller@fc00 device.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/powerpc/dts/p2020-post.dtsi b/arch/powerpc/dts/p2020-post.dtsi
index 6debae7..804db73 100644
--- a/arch/powerpc/dts/p2020-post.dtsi
+++ b/arch/powerpc/dts/p2020-post.dtsi
@@ -50,6 +50,7 @@
 /include/ "pq3-i2c-0.dtsi"
 /include/ "pq3-i2c-1.dtsi"
 /include/ "pq3-duart-0.dtsi"
+/include/ "pq3-gpio-0.dtsi"
 
 /include/ "pq3-etsec1-0.dtsi"
 /include/ "pq3-etsec1-1.dtsi"