drm/mcde: Make use of the helper function devm_platform_ioremap_resource()

Use the devm_platform_ioremap_resource() helper instead of
calling platform_get_resource() and devm_ioremap_resource()
separately

Signed-off-by: Cai Huoqing <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/mcde/mcde_drv.c

···
 	struct drm_device *drm;
 	struct mcde *mcde;
 	struct component_match *match = NULL;
-	struct resource *res;
 	u32 pid;
 	int irq;
 	int ret;
···
 		goto clk_disable;
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	mcde->regs = devm_ioremap_resource(dev, res);
+	mcde->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(mcde->regs)) {
 		dev_err(dev, "no MCDE regs\n");
 		ret = -EINVAL;

drivers/gpu/drm/mcde/mcde_dsi.c

···
 	struct device *dev = &pdev->dev;
 	struct mcde_dsi *d;
 	struct mipi_dsi_host *host;
-	struct resource *res;
 	u32 dsi_id;
 	int ret;
 
···
 		return PTR_ERR(d->prcmu);
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	d->regs = devm_ioremap_resource(dev, res);
+	d->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(d->regs))
 		return PTR_ERR(d->regs);