drm/stm: dsi: Use devm_platform_ioremap_resource()

Convert platform_get_resource(),devm_ioremap_resource() to a single call
to devm_platform_ioremap_resource(), as this is exactly what this function
does.
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Acked-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
Signed-off-by: Philippe Cornu <philippe.cornu@foss.st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230421083402.21364-1-yang.lee@linux.alibaba.com

drivers/gpu/drm/stm/dw_mipi_dsi-stm.c

@@ -444,15 +444,13 @@ static int dw_mipi_dsi_stm_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct dw_mipi_dsi_stm *dsi;
 	struct clk *pclk;
-	struct resource *res;
 	int ret;
 
 	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
 	if (!dsi)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	dsi->base = devm_ioremap_resource(dev, res);
+	dsi->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(dsi->base)) {
 		ret = PTR_ERR(dsi->base);
 		DRM_ERROR("Unable to get dsi registers %d\n", ret);