arm64: dts: qcom: qcm2290: declare VLS CLAMP register for USB3 PHY

The USB3 PHY on the QCM2290 platform doesn't have built-in
PCS_MISC_CLAMP_ENABLE register. Instead clamping is handled separately
via the register in the TCSR space. Declare corresponding register.

Fixes: 0c55f622 ("arm64: dts: qcom: qcm2290: Add USB3 PHY")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240117-usbc-phy-vls-clamp-v2-5-a950c223f10f@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/qcm2290.dtsi

@@ -442,6 +442,11 @@ tcsr_mutex: hwlock@340000 {
 			#hwlock-cells = <1>;
 		};
 
+		tcsr_regs: syscon@3c0000 {
+			compatible = "qcom,qcm2290-tcsr", "syscon";
+			reg = <0x0 0x003c0000 0x0 0x40000>;
+		};
+
 		tlmm: pinctrl@500000 {
 			compatible = "qcom,qcm2290-tlmm";
 			reg = <0x0 0x00500000 0x0 0x300000>;
@@ -690,6 +695,8 @@ usb_qmpphy: phy@1615000 {
 
 			#phy-cells = <0>;
 
+			qcom,tcsr-reg = <&tcsr_regs 0xb244>;
+
 			status = "disabled";
 		};