Only build the msm8996 camera HAL if we're not building the VR impl.

Introduce a makefile conditional that prevents the generic msm8996 camera HAL
being pulled in if we're building for a VR product.

Test: none
Bug: none
Change-Id: Ic35f9ae25248ba29b0eb234d7e916dd397d13523
diff --git a/Android.mk b/Android.mk
index 39255be..38c4251 100644
--- a/Android.mk
+++ b/Android.mk
@@ -2,8 +2,10 @@
 ifneq ($(TARGET_BOARD_AUTO),true)
   ifneq ($(strip $(USE_CAMERA_STUB)),true)
     ifneq ($(BUILD_TINY_ANDROID),true)
-      ifneq ($(filter msm8996,$(TARGET_BOARD_PLATFORM)),)
-        include $(addsuffix /Android.mk, $(addprefix $(call my-dir)/, mm-image-codec QCamera2))
+      ifneq ($(USE_VR_CAMERA_HAL), true)
+        ifneq ($(filter msm8996,$(TARGET_BOARD_PLATFORM)),)
+          include $(addsuffix /Android.mk, $(addprefix $(call my-dir)/, mm-image-codec QCamera2))
+        endif
       endif
       ifneq ($(filter msm8998,$(TARGET_BOARD_PLATFORM)),)
         include $(call all-makefiles-under,$(call my-dir)/msm8998)