video: dw_hdmi: Fix compiler warnings with gcc-14

GCC-14 find more warnings like
"make pointer from integer without a cast"
fix them by adding a type cast.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Tom Rini <trini@konsulko.com>
diff --git a/drivers/video/dw_hdmi.c b/drivers/video/dw_hdmi.c
index ab4811c..c217af9 100644
--- a/drivers/video/dw_hdmi.c
+++ b/drivers/video/dw_hdmi.c
@@ -78,10 +78,10 @@
 {
 	switch (hdmi->reg_io_width) {
 	case 1:
-		writeb(val, hdmi->ioaddr + offset);
+		writeb(val, (void *)(hdmi->ioaddr + offset));
 		break;
 	case 4:
-		writel(val, hdmi->ioaddr + (offset << 2));
+		writel(val, (void *)(hdmi->ioaddr + (offset << 2)));
 		break;
 	default:
 		debug("reg_io_width has unsupported width!\n");
@@ -93,9 +93,9 @@
 {
 	switch (hdmi->reg_io_width) {
 	case 1:
-		return readb(hdmi->ioaddr + offset);
+		return readb((void *)(hdmi->ioaddr + offset));
 	case 4:
-		return readl(hdmi->ioaddr + (offset << 2));
+		return readl((void *)(hdmi->ioaddr + (offset << 2)));
 	default:
 		debug("reg_io_width has unsupported width!\n");
 		break;