Use android.hardware.graphics.common@1.0

Some types in composer@2.1 and allocator@2.0 are now in common@1.0.

Test: builds and boots
Change-Id: Ied8e5d1b555cd6bfd2c0381cec537293900d3ffe
diff --git a/include/ui/GrallocAllocator.h b/include/ui/GrallocAllocator.h
index 23b78ed..e3c4248 100644
--- a/include/ui/GrallocAllocator.h
+++ b/include/ui/GrallocAllocator.h
@@ -27,12 +27,12 @@
 namespace Gralloc2 {
 
 using hardware::graphics::allocator::V2_0::Error;
-using hardware::graphics::allocator::V2_0::PixelFormat;
 using hardware::graphics::allocator::V2_0::ProducerUsage;
 using hardware::graphics::allocator::V2_0::ConsumerUsage;
 using hardware::graphics::allocator::V2_0::BufferDescriptor;
 using hardware::graphics::allocator::V2_0::Buffer;
 using hardware::graphics::allocator::V2_0::IAllocator;
+using hardware::graphics::common::V1_0::PixelFormat;
 
 // Allocator is a wrapper to IAllocator, a proxy to server-side allocator.
 class Allocator {