phy: qualcomm: pcie2: register as clock provider

Register pcie2 PHY as a clock provider to enable using it in the
DT-based clock lookup.

Signed-off-by: Dmitry Baryshkov <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/phy/qualcomm/phy-qcom-pcie2.c

···
 	fixed->fixed_rate = 250000000;
 	fixed->hw.init = &init;
 
-	return devm_clk_hw_register(qphy->dev, &fixed->hw);
+	ret = devm_clk_hw_register(qphy->dev, &fixed->hw);
+	if (ret < 0)
+		return ret;
+
+	return devm_of_clk_add_hw_provider(qphy->dev, of_clk_hw_simple_get, &fixed->hw);
 }
 
 static int qcom_pcie2_phy_probe(struct platform_device *pdev)