MIPS: powertv: Fix arguments for free_reserved_area()

Commit 6e7582bf
"MIPS: PowerTV: use free_reserved_area() to simplify code"

merged in 3.11-rc1, broke the build for the powertv defconfig with
the following build error:

arch/mips/powertv/asic/asic_devices.c: In function 'platform_release_memory':
arch/mips/powertv/asic/asic_devices.c:533:7: error: passing argument 1 of
'free_reserved_area' makes pointer from integer without a cast [-Werror]

The free_reserved_area() function expects a void * pointer for the start
address and a void * pointer for the end one.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5624/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/powertv/asic/asic_devices.c

@@ -529,8 +529,7 @@ EXPORT_SYMBOL(asic_resource_get);
  */
 void platform_release_memory(void *ptr, int size)
 {
-	free_reserved_area((unsigned long)ptr, (unsigned long)(ptr + size),
-			   -1, NULL);
+	free_reserved_area(ptr, ptr + size, -1, NULL);
 }
 EXPORT_SYMBOL(platform_release_memory);