drm/vc4: move to devm_platform_ioremap_resource() usage

Replace platform_get_resource_byname + devm_ioremap_resource
with just devm_platform_ioremap_resource()

Used Coccinelle to do this change. SmPl patch:
//rule s/(devm_)platform_get_resource_byname +
//(devm_)ioremap/devm_platform_ioremap_resource.
@rule_3@
identifier res;
expression ioremap;
identifier pdev;
constant mem;
expression name;
@@
-struct resource *res;
<+...
-res = platform_get_resource_byname(pdev,mem,name);
<...
-if (!res) {
-...
-}
...>
-ioremap = devm_ioremap(...);
+ioremap = devm_platform_ioremap_resource_byname(pdev,name);
...+>

v2: Change the SmPl patch to work on multiple occurences of
the pattern. This also fixes the compilation error.

v3: Do not convert "hd" resource to follow the rest of the
refactor. (Maxime)

v4: fix compiler error

Cc: Maxime Ripard <[e-mail]>
Cc: Dave Stevenson <[e-mail]>
Cc: Maíra Canal <[e-mail]>
Reviewed-by: Maxime Ripard <[e-mail]>
Signed-off-by: Anusha Srivatsa <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Maxime Ripard <[e-mail]>

drivers/gpu/drm/vc4/vc4_hdmi.c

···
 	struct resource *res;
 	int ret;
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hdmi");
-	if (!res)
-		return -ENODEV;
-
-	vc4_hdmi->hdmicore_regs = devm_ioremap(dev, res->start,
-					       resource_size(res));
+	vc4_hdmi->hdmicore_regs = devm_platform_ioremap_resource_byname(pdev,
+									"hdmi");
 	if (!vc4_hdmi->hdmicore_regs)
 		return -ENOMEM;
 
+	/* This is shared between both HDMI controllers. Cannot
+	 * claim for both instances. Lets not convert to using
+	 * devm_platform_ioremap_resource_byname() like
+	 * the rest
+	 */
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hd");
 	if (!res)
 		return -ENODEV;
···
 	if (!vc4_hdmi->hd_regs)
 		return -ENOMEM;
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cec");
-	if (!res)
-		return -ENODEV;
-
-	vc4_hdmi->cec_regs = devm_ioremap(dev, res->start, resource_size(res));
+	vc4_hdmi->cec_regs = devm_platform_ioremap_resource_byname(pdev,
+								   "cec");
 	if (!vc4_hdmi->cec_regs)
 		return -ENOMEM;
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "csc");
-	if (!res)
-		return -ENODEV;
-
-	vc4_hdmi->csc_regs = devm_ioremap(dev, res->start, resource_size(res));
+	vc4_hdmi->csc_regs = devm_platform_ioremap_resource_byname(pdev,
+								   "csc");
 	if (!vc4_hdmi->csc_regs)
 		return -ENOMEM;
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dvp");
-	if (!res)
-		return -ENODEV;
-
-	vc4_hdmi->dvp_regs = devm_ioremap(dev, res->start, resource_size(res));
+	vc4_hdmi->dvp_regs = devm_platform_ioremap_resource_byname(pdev,
+								   "dvp");
 	if (!vc4_hdmi->dvp_regs)
 		return -ENOMEM;
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy");
-	if (!res)
-		return -ENODEV;
+	vc4_hdmi->phy_regs = devm_platform_ioremap_resource_byname(pdev,
+								   "phy");
 
-	vc4_hdmi->phy_regs = devm_ioremap(dev, res->start, resource_size(res));
 	if (!vc4_hdmi->phy_regs)
 		return -ENOMEM;
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "packet");
-	if (!res)
-		return -ENODEV;
-
-	vc4_hdmi->ram_regs = devm_ioremap(dev, res->start, resource_size(res));
+	vc4_hdmi->ram_regs = devm_platform_ioremap_resource_byname(pdev,
+								   "packet");
 	if (!vc4_hdmi->ram_regs)
 		return -ENOMEM;
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rm");
-	if (!res)
-		return -ENODEV;
-
-	vc4_hdmi->rm_regs = devm_ioremap(dev, res->start, resource_size(res));
+	vc4_hdmi->rm_regs = devm_platform_ioremap_resource_byname(pdev, "rm");
 	if (!vc4_hdmi->rm_regs)
 		return -ENOMEM;