android-nn-driver: assume OpenCL not present.

Switches default in makefile to assuming that OpenCL is not present.

Test: build
Change-Id: I98af5b313c86fbb712d60b60a34d5724e16d4356

Android.mk

diff --git a/Android.mk b/Android.mk
index ddf80f4..f12c572 100644
--- a/Android.mk
+++ b/Android.mk
@@ -67,13 +67,13 @@
 
 # Variables to control CL/NEON/reference backend support
 # Set them to '0' to disable support for a specific backend
-ARMNN_COMPUTE_CL_ENABLED := 1
+ARMNN_COMPUTE_CL_ENABLED := 0
 ARMNN_COMPUTE_NEON_ENABLED := 1
 ARMNN_REF_ENABLED := 1
 ARMNN_ETHOSN_ENABLED := 1
 
-ifeq ($(ARMNN_COMPUTE_CL_ENABLE),0)
-ARMNN_COMPUTE_CL_ENABLED := 0
+ifeq ($(ARMNN_COMPUTE_CL_ENABLE),1)
+ARMNN_COMPUTE_CL_ENABLED := 1
 endif
 
 ifeq ($(ARMNN_COMPUTE_NEON_ENABLE),0)