gpu: ion: ion_carveout_heap: fix for 3.4

__arch_ioremap is no longer available, use __arm_ioremap instead.
Signed-off-by: Colin Cross <ccross@android.com>
[jstultz: modified patch to apply to staging directory]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/ion/ion_carveout_heap.c

@@ -99,14 +99,14 @@ void ion_carveout_heap_unmap_dma(struct ion_heap *heap,
 void *ion_carveout_heap_map_kernel(struct ion_heap *heap,
 				   struct ion_buffer *buffer)
 {
-	return __arch_ioremap(buffer->priv_phys, buffer->size,
+	return __arm_ioremap(buffer->priv_phys, buffer->size,
 			      MT_MEMORY_NONCACHED);
 }
 
 void ion_carveout_heap_unmap_kernel(struct ion_heap *heap,
 				    struct ion_buffer *buffer)
 {
-	__arch_iounmap(buffer->vaddr);
+	__arm_iounmap(buffer->vaddr);
 	buffer->vaddr = NULL;
 	return;
 }