Add the qfprom efuse node and describe where the GPU speedbin fuse is
located on Milos.

Note that for SM7635-AB at least, the value is "221", the max frequency
for this is 1050MHz. There's another speedbin out there for 1150MHz but
we do not know the value for it so just document in this commit.

Once the value is discovered we should add the speedbins to the A810
Adreno entry and update devicetree.

Signed-off-by: Alexander Koskovich <akoskovich@pm.me>
---
 arch/arm64/boot/dts/qcom/milos.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/milos.dtsi b/arch/arm64/boot/dts/qcom/milos.dtsi
index e1a51d43943f..d1d23dfe7806 100644
--- a/arch/arm64/boot/dts/qcom/milos.dtsi
+++ b/arch/arm64/boot/dts/qcom/milos.dtsi
@@ -1168,6 +1168,18 @@ tcsr: clock-controller@1fc0000 {
 			#reset-cells = <1>;
 		};
 
+		qfprom: efuse@221c8000 {
+			compatible = "qcom,milos-qfprom", "qcom,qfprom";
+			reg = <0x0 0x221c8000 0x0 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			gpu_speed_bin: gpu-speed-bin@138 {
+				reg = <0x138 0x2>;
+				bits = <0 9>;
+			};
+		};
+
 		remoteproc_adsp: remoteproc@3000000 {
 			compatible = "qcom,milos-adsp-pas";
 			reg = <0x0 0x03000000 0x0 0x10000>;

-- 
2.53.0