IVGCVSW-4473 Android R pre Hal 1_3 build changes

* Update ErrorStatus to V1_0::ErrorStatus
* Update Request to V1_0::Request
* Update OperandType to V1_2::OperandType
* Add namespace android::nn::hal in ArmnnDriverImpl for R only
* Add missing g_RelaxedFloat32toFloat16PerformancePowerUsageName
* Add namespace V1_0 or V1_1 where necessary
* Update Android.mk with R macro and android.hardware.neuralnetworks@1.3
* Remove androidnn.go
* include IAllocator in DriverTestHelpers
* Remove unused LOCAL_CFLAGS

Signed-off-by: Kevin May <kevin.may@arm.com>
Change-Id: I1787f1ed6784b3bbec017536d87d49197405e853
Signed-off-by: Kevin May <kevin.may@arm.com>
diff --git a/1.2/HalPolicy.hpp b/1.2/HalPolicy.hpp
index e0a5c2f..cd4f2da 100644
--- a/1.2/HalPolicy.hpp
+++ b/1.2/HalPolicy.hpp
@@ -11,6 +11,8 @@
 
 #include <armnn/Types.hpp>
 
+namespace V1_2 = ::android::hardware::neuralnetworks::V1_2;
+
 namespace armnn_driver
 {
 namespace hal_1_2