phy: qcom-qmp: Get dp_com I/O resource by index

The dp_com resource is always at index 1 according to the dts files in
the kernel. Get this resource by index so that we don't need to make
future additions to the DT binding use 'reg-names'.

Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Cc: Jeykumar Sankaran <jsanka@codeaurora.org>
Cc: Chandan Uddaraju <chandanu@codeaurora.org>
Cc: Vara Reddy <varar@codeaurora.org>
Cc: Tanmay Shah <tanmay@codeaurora.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Manu Gautam <mgautam@codeaurora.org>
Cc: Sandeep Maheswaram <sanm@codeaurora.org>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Jonathan Marek <jonathan@marek.ca>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Rob Clark <robdclark@chromium.org>
Link: https://lore.kernel.org/r/20200916231202.3637932-6-swboyd@chromium.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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

@@ -3268,13 +3268,9 @@ static int qcom_qmp_phy_probe(struct platform_device *pdev)
 
 	/* per PHY dp_com; if PHY has dp_com control block */
 	if (cfg->has_phy_dp_com_ctrl) {
-		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
-						   "dp_com");
-		base = devm_ioremap_resource(dev, res);
-		if (IS_ERR(base))
-			return PTR_ERR(base);
-
-		qmp->dp_com = base;
+		qmp->dp_com = devm_platform_ioremap_resource(pdev, 1);
+		if (IS_ERR(qmp->dp_com))
+			return PTR_ERR(qmp->dp_com);
 	}
 
 	mutex_init(&qmp->phy_mutex);