Add a device node for the Product Register, which provides SoC product
and revision information.

Changes are already present in upstream but the PRR node is part of
initial SoC DTSI and cannot be individually backported hence this
new commit.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 arch/arm/boot/dts/r8a7742.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/boot/dts/r8a7742.dtsi b/arch/arm/boot/dts/r8a7742.dtsi
index 0da46a2edddd..2ad6f965ccbd 100644
--- a/arch/arm/boot/dts/r8a7742.dtsi
+++ b/arch/arm/boot/dts/r8a7742.dtsi
@@ -1927,6 +1927,11 @@
 			renesas,#wpf = <4>;
 		};
 
+		prr: chipid@ff000044 {
+			compatible = "renesas,prr";
+			reg = <0 0xff000044 0 4>;
+		};
+
 		cmt0: timer@ffca0000 {
 			compatible = "renesas,cmt-48-r8a7742",
 				     "renesas,cmt-48-gen2";
-- 
2.17.1