Add android-ex-camera2 static java library to PDK.

Library is located frameworks/ex/camera2/public.
This is required to allow pdk/apps/CameraITS to build in the PDK.

Bug: 10337323
Change-Id: I5b835134012f90462a70b9e38b69c3168df00cfd
diff --git a/core/pdk_config.mk b/core/pdk_config.mk
index cdd2a76..9590d70 100644
--- a/core/pdk_config.mk
+++ b/core/pdk_config.mk
@@ -51,7 +51,8 @@
 	target/common/obj/JAVA_LIBRARIES/android.test.runner_intermediates \
 	target/common/obj/JAVA_LIBRARIES/telephony-common_intermediates \
 	target/common/obj/JAVA_LIBRARIES/voip-common_intermediates \
-	target/common/obj/JAVA_LIBRARIES/mms-common_intermediates
+	target/common/obj/JAVA_LIBRARIES/mms-common_intermediates \
+	target/common/obj/JAVA_LIBRARIES/android-ex-camera2_intermediates
 # not java libraries
 PDK_PLATFORM_JAVA_ZIP_CONTENTS := \
 	target/common/obj/APPS/framework-res_intermediates/package-export.apk \