[media] cx231xx-417: Remove unnecessary casts of void ptr returning alloc function return values

Hi,

The [vk][cmz]alloc(_node) family of functions return void pointers which
it's completely unnecessary/pointless to cast to other pointer types since
that happens implicitly.

This patch removes such casts from drivers/media/
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/cx231xx/cx231xx-417.c

@@ -940,14 +940,14 @@ static int cx231xx_load_firmware(struct cx231xx *dev)
 	u16 _buffer_size = 4096;
 	u8 *p_buffer;
 
-	p_current_fw = (u32 *)vmalloc(1884180*4);
+	p_current_fw = vmalloc(1884180 * 4);
 	p_fw = p_current_fw;
 	if (p_current_fw == 0) {
 		dprintk(2, "FAIL!!!\n");
 		return -1;
 	}
 
-	p_buffer = (u8 *)vmalloc(4096);
+	p_buffer = vmalloc(4096);
 	if (p_buffer == 0) {
 		dprintk(2, "FAIL!!!\n");
 		return -1;