hwrng: st: dt: Fix trivial typo in node address

DT nodes should not append their addresses with '0x'.

Suggested-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/Documentation/devicetree/bindings/rng/st,rng.txt b/Documentation/devicetree/bindings/rng/st,rng.txt
index dbc64e6..35734bc 100644
--- a/Documentation/devicetree/bindings/rng/st,rng.txt
+++ b/Documentation/devicetree/bindings/rng/st,rng.txt
@@ -8,7 +8,7 @@
 
 Example:
 
-rng@0xfee80000 {
+rng@fee80000 {
 	compatible      = "st,rng";
 	reg		= <0xfee80000 0x1000>;
 	clocks          = <&clk_sysin>;